Investment Tax Strategies

Last-Minute Tax Deductions You Can Still Claim in 2026

Last-Minute Tax Deductions You Can Still Claim in 2026 Filing season is winding down and you want to make sure you have not missed any deductions before you submit. Some tax-saving moves are only available before Decemb

What Happens If You Miss the Tax Deadline?

What Happens If You Miss the Tax Deadline? Missing the April 15 tax deadline is not ideal, but it is not catastrophic if you act quickly. The IRS imposes two separate penalties for late filers, and understanding how the

How to File a Tax Extension in 2026 (Step-by-Step)

How to File a Tax Extension in 2026 Step-by-Step A tax extension gives you an extra six months to file your federal return — moving the deadline from April 15 to October 15. What it does not do is give you extra time to

Common Tax Filing Mistakes That Trigger Audits

Math errors, unreported income, and inflated deductions are the top audit triggers. Avoid these 10 common mistakes that get the IRS attention.

State Sales Tax Rates 2026: Complete Comparison

Combined state and local sales tax ranges from 0% in some states to over 10% in others. See where your state ranks and how it affects your total tax burden.

Vehicle Tax Deductions: Mileage vs Actual Expenses

The standard mileage rate for 2026 is 67 cents per mile. Actual expenses include gas, insurance, repairs, and depreciation. Learn when each method saves more and how to switch between them.

Dependent Care FSA vs Tax Credit: Which Saves More

The Dependent Care FSA lets you set aside $5,000 pre-tax for childcare while the Child and Dependent Care Credit provides 20-35% of up to $6,000 in expenses. Compare which saves more.

1099 vs W-2: Understanding Your Tax Forms

W-2 employees have taxes withheld automatically. 1099 contractors handle their own taxes. Understanding the difference is crucial for tax planning.

CPA vs Tax Software: Which Should You Choose?

Tax software costs $0-$130 while CPAs charge $200-$500 or more. When is professional help worth the money? We compare costs, accuracy, and the situations where each excels.

Marginal vs Effective Tax Rate: Know the Difference

Your marginal tax rate is the rate on your last dollar of income while your effective rate is the average rate across all income. Understanding this difference prevents costly tax mistakes.

Long-Term vs Short-Term Capital Gains Tax Rates

Assets held over one year qualify for lower long-term capital gains rates of 0%, 15%, or 20%. Short-term gains are taxed as ordinary income. This difference can save thousands.

Farm Income and Agricultural Tax Deductions

Farmers file Schedule F and can deduct equipment, feed, seed, and land improvements. Income averaging and conservation deductions provide additional tax savings for agriculture.

Education Tax Credits: AOTC vs Lifetime Learning

The American Opportunity Tax Credit and Lifetime Learning Credit can save students and parents up to $2,500 per year. Learn which one to claim.

Pension vs 401k: Tax Treatment Comparison Guide

Pensions provide guaranteed income taxed as ordinary income. 401k plans offer contribution flexibility with tax-deferred growth. Compare how each affects your retirement taxes.

S Corp vs LLC for Tax Savings: Which is Better?

Switching from a sole proprietorship to an S Corp can save thousands in self-employment taxes. Learn when the switch makes financial sense.

Earned Income Tax Credit (EITC) 2026: Complete Guide

The EITC can be worth up to $7,830 for qualifying families. This often-overlooked credit lifts millions out of poverty. Check if you qualify.

State Tax Reciprocity Agreements Explained

If you live in one state and work in another, reciprocity agreements may save you from filing two state returns. See which states have agreements and how to claim exemption.

Charitable Donation Tax Deductions: Rules for 2026

Cash, property, and stock donations are all deductible if you itemize. Learn documentation requirements, limits, and the $300 standard deduction workaround.

Year-End Tax Planning Moves Before December 31

From retirement contributions to charitable giving, these year-end tax moves can save thousands. Most must be completed by December 31.

Estimated Tax Payments: How to Calculate and Pay

Self-employed workers and those with significant non-wage income must make quarterly estimated tax payments. Learn how to calculate your payments, due dates, and how to avoid penalties.

Retirement Account Tax Benefits: 401k, IRA, and Roth

Traditional 401k and IRA contributions reduce your taxable income now. Roth accounts grow tax-free. Here is how to use both for maximum tax savings.

529 Plan Tax Benefits: A State-by-State Overview

Over 30 states offer income tax deductions for 529 plan contributions. Federal law allows tax-free withdrawals for education expenses. See what your state offers.

How to Reduce Your Tax Bill Legally: 12 Strategies

From maximizing retirement contributions to harvesting losses, these 12 legal strategies can significantly reduce what you owe the IRS.

Tax Penalty Calculator: How Much Will the IRS Charge?

Late filing penalties are 5% per month. Late payment penalties are 0.5% per month. Learn how to calculate what you owe and how to reduce penalties.

Dependent Tax Rules 2026: Who You Can Claim

Claiming a dependent can save you thousands in credits and deductions. Learn the qualifying child and qualifying relative tests for 2026.

How Filing Status Affects Your Tax Rate

Your filing status determines your tax brackets, standard deduction, and eligibility for credits. Choosing the wrong status can cost thousands. Understand all five options.

Tax Scams to Watch For in 2026: IRS Warnings

The IRS dirty dozen list highlights the worst tax scams each year. From fake IRS agents to inflated refund schemes, here is how to protect yourself.

Property Tax Appeals: How to Lower Your Bill

Think your property tax assessment is too high? Many homeowners successfully appeal and save hundreds per year. Here is the step-by-step process.

Tax Benefits of Starting a Business Mid-Year

Starting a business in the middle of the year comes with unique tax advantages including startup cost deductions and first-year bonus depreciation.

Setting Up Payroll Tax Withholding for a New Year

January is the best time to review your W-4 withholding. Changes in income, family size, or deductions should trigger a withholding adjustment.

Summer Job Tax Guide for Teens and Students

Your teenager just got a summer job. Here is what parents and students need to know about payroll taxes, filing requirements, and the kiddie tax.

Mid-Year Tax Checkup: 7 Steps Before July

June is the perfect time to review your tax situation. These seven mid-year checkup steps can prevent surprises at filing time and save you money.

Tax Implications of Inheriting Money or Property

Inherited assets generally receive a stepped-up basis, potentially saving heirs thousands in capital gains taxes. But some types of inherited income are taxable.

Roth Conversion Strategies for Lower Tax Years

Converting traditional IRA funds to Roth during a low-income year can save significant taxes long-term. Here is how to evaluate if a conversion makes sense.

Kiddie Tax Rules: Unearned Income for Children

Children with unearned income over $2,500 may be taxed at their parents marginal rate. The kiddie tax prevents shifting investment income to children in lower brackets. Learn the rules.

HSA Tax Benefits: The Triple Tax Advantage Explained

Health Savings Accounts offer a unique triple tax benefit: deductible contributions, tax-free growth, and tax-free withdrawals for medical expenses.

Gig Economy Tax Tips: Delivery and Rideshare

DoorDash, Instacart, Uber, Lyft — gig workers face unique tax challenges. Here are the deductions you are missing and the records you need to keep.

Content Creator and Influencer Tax Guide 2026

YouTubers, TikTokers, and Instagram creators owe taxes on brand deals, ad revenue, and gifted products. Learn which expenses are deductible and how to file as a creator.

Starting a Business: LLC vs S-Corp Tax Comparison

Your business structure determines how you pay taxes. LLCs offer simplicity while S-Corps can save on self-employment tax. Compare the tax implications of each structure.

Child Tax Credit 2026: How Much and Who Qualifies

The Child Tax Credit provides up to $2,000 per qualifying child. Learn income limits, age requirements, and how to claim it on your return.

Hiring Your Kids: Legal Tax Savings for Families

Sole proprietors can hire their children under 18 and avoid payroll taxes on their wages. The child earns income in a lower bracket while you deduct a business expense. Here are the rules.

Alternative Minimum Tax 2026: Do You Owe AMT?

The Alternative Minimum Tax ensures high-income taxpayers pay a minimum amount regardless of deductions. The 2026 exemption is $85,700 single. Learn who is affected and how to calculate it.

Tax Planning for Newlyweds: First Year Tips

Getting married changes your tax situation significantly. From filing status to withholding adjustments, here is what newlyweds need to know.

Education Tax Benefits: 529 Plans Explained

529 college savings plans offer tax-free growth and withdrawals for education expenses. Some states also give a deduction on contributions. Here is how they work.

Estimated Tax Penalty Calculator and Avoidance

Missed a quarterly estimated tax payment? The IRS charges interest-based penalties. Use our guide to calculate your penalty and learn strategies to minimize it.

Year-End Tax Moves for Small Business Owners

From equipment purchases to retirement contributions, small business owners have powerful year-end tax moves. These strategies must happen before December 31.

Tax Credits for Teachers: Educator Expense Guide

Teachers can deduct up to $300 in unreimbursed classroom supplies without itemizing. Learn what qualifies and how to claim the educator expense deduction.

June 15 Estimated Tax Payment: Complete Guide

The second quarterly estimated tax payment is due June 15. Here is how to calculate what you owe and avoid underpayment penalties from the IRS.

Child Tax Credit 2026: Eligibility and Amount

The Child Tax Credit provides up to $2,000 per qualifying child under 17. Income phaseouts begin at $200,000 single or $400,000 married. Learn eligibility rules and how to claim it.

Tax Planning for High Income Earners in 2026

Taxpayers earning over $250,000 face additional taxes including the NIIT, Additional Medicare Tax, and Pease limitations. These strategies help high earners legally minimize their tax burden.

Gambling Income Tax Rules: Winnings and Losses

All gambling winnings are taxable including lottery, sports betting, and casino games. You can deduct losses but only up to the amount of winnings you report.

How to Handle a Tax Audit: Step-by-Step Guide

Getting audited is stressful but manageable. Learn what triggers audits, how to respond, and the documents you need to have ready.

Tax Implications of Selling Your Home in 2026

You can exclude up to $250,000 ($500,000 married) in home sale gains from taxes. Learn the rules, exceptions, and how to calculate your gain.

Tax Refund: How to Track and When to Expect It

Most e-filed returns get refunds within 21 days. Learn how to check your refund status with the IRS "Where Is My Refund" tool.

Tax Withholding: How to Avoid Owing or Overpaying

Adjusting your W-4 can mean a bigger paycheck now or a refund later. Use the IRS withholding estimator to find your sweet spot.

Getting Divorced: How to Split Tax Benefits

Divorced couples must decide who claims the children, how to split deductions, and which filing status to use. This guide explains the IRS rules for dividing tax benefits.

Tax Benefits of Homeownership Beyond the Mortgage

Homeowners can deduct more than mortgage interest. Property taxes, home office space, energy improvements, and capital gains exclusions all reduce your tax burden.

Tax Statute of Limitations: IRS Audit Time Limits

The IRS generally has three years to audit your return and ten years to collect taxes owed. Certain situations extend these limits. Know your rights and timelines.

Offer in Compromise: Settling Tax Debt for Less

An offer in compromise lets you settle IRS tax debt for less than the full amount owed. The IRS accepted 17,890 offers last year. Learn if you qualify and how to apply.

DoorDash and Food Delivery Driver Tax Guide

Food delivery drivers are independent contractors who owe self-employment tax. Mileage is your biggest deduction. Learn how to track expenses and file quarterly estimates.

Tax Guide for Real Estate Agents and Brokers

Real estate agents are typically independent contractors who can deduct marketing, MLS fees, mileage, and continuing education. Learn the top deductions and how to file.

What to Do If You Cannot Pay Your Tax Bill

Cannot afford your tax bill? File anyway to avoid the failure-to-file penalty. The IRS offers payment plans, hardship extensions, and even settlement options.

Crypto Tax Guide 2026: Bitcoin, Ethereum, and NFTs

The IRS treats cryptocurrency as property. Every trade, swap, and sale is a taxable event. Learn how to calculate cost basis, report crypto income, and handle DeFi and staking rewards.

Tax Documents Checklist: Every Form You Need

W-2s, 1099s, 1098s, and more arrive between January and March. This checklist ensures you have every document before filing. Missing forms cause delays and amended returns.

Tax Debt Relief Options: IRS Fresh Start Program

The IRS Fresh Start program expands installment agreements, eases lien filing, and doubles the threshold for simplified payment plans. Learn if you qualify and how to apply for relief.

Net Investment Income Tax: The 3.8% Surtax

The 3.8% Net Investment Income Tax applies to individuals with modified AGI over $200,000 single or $250,000 married. Learn what income counts and strategies to minimize this surtax.

Tax Bracket Creep: How Inflation Affects Your Taxes

The IRS adjusts tax brackets annually for inflation, but wage growth can still push you into higher brackets. Learn how bracket creep works and strategies to manage its impact on your taxes.

Charitable Giving Tax Strategies for Year End

Bunching donations, donor-advised funds, and qualified charitable distributions can maximize your tax benefit from charitable giving before December 31.

Tax Extensions: How to File for More Time in 2026

Form 4868 gives you an automatic 6-month extension to file. But you still must pay estimated taxes by April 15. Here is how to file properly.

Property Tax Appeals: How to Lower Your Bill

Property taxes are based on assessed value, which can be wrong. Learn how to file a property tax appeal, gather comparable sales data, and negotiate a lower assessment with your county.

Tax Cuts and Jobs Act Provisions Expiring in 2026

Major Tax Cuts and Jobs Act provisions expire after 2025 including lower tax brackets, doubled standard deduction, and the SALT cap. Here is what changes and how to prepare.

Cryptocurrency Tax Guide 2026: What the IRS Expects

The IRS treats cryptocurrency as property. Every sale, swap, or payment is a taxable event. Learn how to report crypto on your tax return.

Moving to a New State: Tax Implications to Know

Moving states can trigger dual-state filing, different tax rates, and domicile questions. Learn how to handle the tax transition and avoid paying taxes in both states.

Electric Vehicle Tax Credit 2026: Complete Guide

The federal EV tax credit offers up to $7,500 for new electric vehicles and $4,000 for used EVs. Assembly, price, and income limits determine eligibility.

How to Calculate Your Effective Tax Rate

Your effective tax rate is the actual percentage of income you pay in taxes. It is always lower than your marginal bracket. Here is exactly how to calculate it.

Tax Prep Document Organizer: What to Collect

From W-2s to mortgage interest statements, here is every document you need for tax filing organized by category. Print this checklist and start collecting.

Job Loss and Unemployment: Tax Implications

Unemployment benefits are taxable income. Severance pay, COBRA subsidies, and retirement plan rollovers all have tax consequences. Here is how to handle taxes after a job loss.

SECURE Act 2.0: Retirement Tax Changes for 2026

SECURE Act 2.0 raised the RMD age, created Roth employer matches, and added emergency savings provisions. Here are the changes that affect your retirement taxes in 2026.

Clergy and Minister Tax Rules: Housing Allowance

Ministers receive a unique tax benefit: the parsonage housing allowance excludes housing costs from income tax. But they still owe self-employment tax. Here are the rules.

Energy Tax Credits for Home Improvements 2026

Solar panels, heat pumps, insulation, and energy-efficient windows can qualify for federal tax credits up to $3,200 per year. Plan installations before year end.

September 15 Estimated Tax Payment Guide

The third quarterly estimated tax payment is due September 15. Here is how to recalculate your payments based on your actual year-to-date income.

Side Hustle Tax Tracker: Free Spreadsheet Guide

A simple spreadsheet can save you hours at tax time and hundreds in missed deductions. Here is how to set up an income and expense tracker for side income.

Gifting Strategies to Reduce Your Estate Tax

The annual gift tax exclusion lets you give up to $19,000 per person tax-free in 2026. Strategic gifting can reduce your taxable estate significantly over time.

Tax Deductions for Content Creators and Influencers

YouTube, TikTok, and Instagram creators can deduct equipment, software, home office, travel, and more. Here are the top deductions for content creators.

Tax-Free Retirement Income: Strategies That Work

Roth accounts, HSAs, municipal bonds, and life insurance are all sources of tax-free retirement income. Here is how to build a tax-efficient retirement plan.

Having a Baby: Tax Credits and Benefits for Parents

A new baby means a new dependent, Child Tax Credit, and possibly the Earned Income Tax Credit. Learn every tax benefit available to new parents in 2026.

Small Business Tax Deductions: 20 You Should Know

From vehicle mileage to health insurance premiums, small business owners have access to dozens of deductions. These 20 are the most valuable.

Estimated Tax Safe Harbor Rules Explained

The safe harbor rule protects you from underpayment penalties if you pay 100% of last year tax liability or 90% of current year. Learn how to calculate and when each rule applies.

Tax Planning After a Job Loss or Layoff

Unemployment benefits are taxable income. Severance, COBRA, and 401k rollovers also have tax implications. Here is how to navigate taxes after losing a job.

Capital Gains Tax 2026: Rates and How to Minimize

Long-term capital gains are taxed at 0%, 15%, or 20% depending on income. Short-term gains are taxed as ordinary income. Strategies to minimize both.

Best Tax Software for Seniors and Retirees

Retirees deal with Social Security taxation, RMDs, and pension income. We rank the best tax software for seniors based on ease of use, retirement features, and pricing.

Electric Vehicle Tax Credit 2026: Eligibility Rules

The federal EV tax credit provides up to $7,500 for new electric vehicles meeting domestic assembly and battery requirements. Check if your vehicle qualifies for 2026.

New Tax Law Changes Effective in 2027

Several tax provisions are set to change in 2027 including the potential expiration of TCJA provisions. Here is what taxpayers should watch for and plan around.

Best Tax Software for Day Traders in 2026

Day traders face hundreds of transactions and wash sale rules. We compare the tax software that handles high-volume trading, mark-to-market elections, and Schedule D reporting.

Education Tax Credits: AOTC vs Lifetime Learning

The American Opportunity Tax Credit provides up to $2,500 for the first four years of college. The Lifetime Learning Credit covers $2,000 for any post-secondary education. Compare both.

AI Tax Software: Is It Ready for 2026 Filing?

Artificial intelligence is transforming tax preparation. We evaluate AI-powered features in TurboTax, H&R Block, and newer competitors for accuracy and value.

Best Tax Software for Landlords and Rental Income

Rental property owners need software that handles Schedule E, depreciation, and multiple properties. We rank the best tax software options for landlords in 2026.

Inheriting a House: Tax Basis and Reporting Guide

When you inherit property, you get a stepped-up cost basis equal to the fair market value at the date of death. This can save you thousands in capital gains taxes when you sell.

Tax Planning for New Parents: Baby Tax Benefits

A new baby means new tax benefits including the Child Tax Credit, dependent care FSA, and potential filing status changes. Here is what new parents should know.

Energy Tax Credits 2026: Solar, EV, and Home

The Inflation Reduction Act provides tax credits for solar panels, heat pumps, insulation, and electric vehicles. Learn which credits you qualify for and how much you can save.

Tax Guide for Teachers: Educator Expense Deduction

Teachers can deduct up to $300 in unreimbursed classroom expenses without itemizing. Learn which supplies qualify, how to claim the deduction, and additional credits available.

Estimated Tax Safe Harbor: Avoid Penalties

The IRS safe harbor rules let you avoid underpayment penalties by paying 100% of last year tax or 90% of this year tax. Here is how to use this to your advantage.

How to Avoid Tax Scams During Filing Season

Tax scams surge every filing season with fake IRS calls, phishing emails, and fraudulent preparers. Learn the red flags and how to protect yourself from tax fraud.

Get Ready for Tax Season 2027: December Checklist

Tax season starts in January. Use this December checklist to organize documents, verify withholding, and set yourself up for a smooth filing experience.

Home Office Tax Deduction: Who Qualifies in 2026

The home office deduction can save self-employed workers thousands. Learn the simplified and regular methods, plus who qualifies (W-2 employees do not).

Tax Guide for Uber and Lyft Drivers in 2026

Rideshare drivers can deduct mileage, phone expenses, and more. This guide covers everything Uber and Lyft drivers need to know about taxes.

How to Choose the Best Tax Software in 2026: TurboTax vs H&R Block vs TaxAct

Compare TurboTax, H&R Block, TaxAct, FreeTaxUSA, and TaxSlayer for 2026. Includes pricing, strengths and weaknesses, and recommendations by filing situation.

Filing Taxes as a Remote Worker: State Tax Rules

Working remotely from a different state than your employer creates tax complications. Learn which states require you to file and how to avoid double taxation.

FreeTaxUSA Review 2026: Best Budget Tax Software

FreeTaxUSA offers free federal filing and $14.99 state returns. We test whether this budget option handles complex tax situations well.

Home Office Tax Deduction: Full Rules and How to Claim It

Learn the IRS rules for the home office tax deduction: the regular and exclusive use test, simplified vs. actual expenses methods, who qualifies, and how to calculate your deduction.

Health Insurance Tax Forms: 1095-A, 1095-B, 1095-C

Three different 1095 forms report your health coverage to the IRS. Marketplace users need the 1095-A to reconcile premium tax credits. Here is which form you need and how to use it.

Year-End Tax Planning Checklist for 2026

December is your last chance to reduce your 2026 tax bill. This checklist covers retirement contributions, charitable giving, tax-loss harvesting, and other year-end moves that save money.

HSA Tax Benefits: The Triple Tax Advantage

Health Savings Accounts offer a rare triple tax benefit: tax-deductible contributions, tax-free growth, and tax-free withdrawals for medical expenses. Maximize your HSA with these strategies.

Charitable Giving Tax Strategies Beyond Cash

Donating appreciated stock, using donor-advised funds, and bunching charitable gifts can multiply your tax savings compared to cash donations. Learn the smartest ways to give.

Tax Withholding vs Estimated Payments Explained

W-2 employees use withholding while self-employed workers make estimated payments. Mixing both income types creates complexity. Learn how to avoid underpayment penalties either way.

Gambling Winnings and Losses: Tax Reporting Rules

All gambling winnings are taxable income including casino, lottery, and sports bets. You can deduct losses but only if you itemize and only up to the amount of your winnings.

Rental Property Tax Deductions 2026: What Landlords Can Write Off

Rental income is taxable but offset by depreciation, repairs, and mortgage interest. Learn how to report rental income, deduct expenses, and use the $25,000 loss allowance.

Estate and Inheritance Tax Basics for Heirs

The federal estate tax exemption is $13.61 million in 2026. Most heirs owe nothing, but state inheritance taxes and step-up basis rules still matter. Here is what heirs need to know.

Tax Guide for Stock Options: ISOs and NSOs Explained

Incentive stock options and non-qualified stock options are taxed very differently. Learn when to exercise, how to report them, and strategies to minimize your tax bill.

Military Tax Benefits and Filing While Deployed

Active-duty service members get automatic deadline extensions, combat zone exclusions, and special deductions. This guide covers every military tax benefit available in 2026.

2026 Federal Tax Brackets Explained Simply

The 2026 federal income tax brackets range from 10% to 37%. Learn which bracket you fall into and how marginal tax rates actually work.

Freelancer Tax Guide 2026: Self-Employment Taxes

Self-employed? You owe an extra 15.3% in self-employment tax on top of income tax. Here is how to minimize your tax bill and avoid IRS penalties.

Tax Filing Deadlines 2026: Every Date You Need

April 15, 2026 is the federal filing deadline. But there are dozens of other important tax dates throughout the year. Here is the complete calendar.

Best Free Tax Software 2026: 5 Options Tested (1 Clear Winner)

IRS Free File, Cash App Taxes, FreeTaxUSA, and more. We compare every free tax filing option side by side for the 2026 tax season.

How to File an Amended Tax Return: Form 1040-X Explained

Need to correct a previous tax return? Learn how to file Form 1040-X to fix missed income, deductions, or wrong filing status — plus how to track your amended return.

Self-Employment Tax Guide 2026: What to Pay and When

Self-employed in 2026? Learn how SE tax works at 15.3%, the quarterly payment schedule, how to calculate estimated payments, and what happens if you underpay.

Complete Tax Filing Guide 2026: Everything You Need to Know

Everything you need to file your 2026 taxes: key deadlines, required documents, filing status options, standard vs. itemized deductions, and step-by-step filing instructions.

Tax Credit

A dollar-for-dollar reduction in your tax bill, more valuable than a deduction. A $1,000 credit saves $1,000 in taxes; a $1,000 deduction saves $220-370 depending on your bracket. Refundable credits (Child Tax Credit, EITC) can produce a refund even if you owe zero tax.

Earned Income Tax Credit (EITC)

A refundable tax credit for low-to-moderate income workers. Worth up to $7,430 for a family with 3+ children (2024). One of the most valuable and most-missed credits. Eligibility based on earned income, filing status, and number of qualifying children. Must file a return to claim it.

Self-Employment Tax

The Social Security and Medicare tax that self-employed individuals pay — currently 15.3% on net earnings (12.4% Social Security + 2.9% Medicare). Employees split this with employers; self-employed pay both halves. You can deduct half of SE tax as an above-the-line deduction on your 1040.

Quarterly Estimated Tax

Tax payments due four times per year (April 15, June 15, September 15, January 15) for income not subject to withholding — freelance, rental, and investment income. Underpayment penalties apply if you don't pay at least 90% of current year's tax or 100% of prior year's tax through quarterly payments.

Tax Withholding

The amount your employer deducts from each paycheck for federal and state taxes. Controlled by your W-4 form. If too little is withheld, you owe at tax time (possibly with penalties). If too much, you get a refund — which means you gave the government an interest-free loan.

Marginal Tax Rate

The tax rate applied to your last dollar of income. The US uses progressive brackets — each bracket taxes only the income within that range. A 24% marginal rate doesn't mean all income is taxed at 24%. Effective tax rate (total tax / total income) is always lower than marginal rate.

Taxable Income

Your income after all deductions — the amount actually subject to tax. Calculated: AGI minus the greater of standard or itemized deductions, minus any qualified business income deduction. Tax brackets are applied to this number, not your gross income.

Capital Gains Tax

Tax on profit from selling investments. Short-term (held under 1 year): taxed as ordinary income (10-37%). Long-term (held over 1 year): taxed at preferential rates (0%, 15%, or 20%). The long-term rate incentivizes buy-and-hold investing. Tax-loss harvesting offsets gains with losses.

Tax Extension (Form 4868)

A filing that extends your tax return deadline from April 15 to October 15. Does NOT extend the payment deadline — you must estimate and pay any taxes owed by April 15 to avoid interest and penalties. Extensions are automatic upon filing; no approval needed. Free to file.

Average Tax Rate

Total tax liability divided by total income (before deductions), giving a broad sense of overall tax burden. Unlike the effective rate, it uses gross income as the denominator.

Form W-2 (Wage and Tax Statement)

An IRS form employers must send to each employee and the IRS annually, reporting wages paid and taxes withheld. Employees use it to file their federal and state income tax returns.

Form 1040 (U.S. Individual Income Tax Return)

The standard IRS form used by U.S. citizens and residents to file their annual federal income tax return. It summarizes income, deductions, credits, and calculates the tax owed or refund due.

Form 1040-SR (Tax Return for Seniors)

A simplified version of Form 1040 designed for taxpayers age 65 and older. It uses larger print and includes a chart for the higher standard deduction available to seniors.

Schedule SE (Self-Employment Tax)

An IRS schedule used to calculate the self-employment tax owed by individuals with net self-employment income of $400 or more. It covers both the employee and employer portions of Social Security and Medicare.

Form 8962 (Premium Tax Credit)

An IRS form used to reconcile the Affordable Care Act Premium Tax Credit received in advance with the actual credit you are entitled to based on your final income. Required for anyone who received marketplace insurance subsidies.

Form 1040-X (Amended U.S. Individual Income Tax Return)

The IRS form used to correct errors or make changes to a previously filed federal tax return. Common reasons include missed deductions, incorrect filing status, or unreported income.

Effective Tax Rate

Your total tax paid divided by your total taxable income, expressed as a percentage. It represents the average rate at which your income is taxed across all brackets, always lower than your marginal rate.

Alternative Minimum Tax (AMT)

A parallel tax system designed to ensure high-income taxpayers pay a minimum amount of tax. It disallows certain deductions and exemptions, then applies a flat rate. You pay AMT only if it exceeds your regular tax.

Self-Employment Tax Rate

Self-employed individuals pay 15.3% on net earnings — 12.4% for Social Security and 2.9% for Medicare — covering both the employee and employer share. Half of this tax is deductible as an above-the-line adjustment.

Net Investment Income Tax (NIIT)

A 3.8% surtax on net investment income (dividends, capital gains, rental income) for taxpayers whose MAGI exceeds $200,000 (single) or $250,000 (married filing jointly). Introduced by the Affordable Care Act.

Additional Medicare Tax

An extra 0.9% Medicare tax on wages, compensation, and self-employment income above $200,000 (single) or $250,000 (married filing jointly). Employers withhold it but the self-employed must account for it on Schedule SE.

Federal Tax Lien

A legal claim the government places on your property when you neglect or fail to pay a tax debt. It attaches to all assets (real estate, personal property, financial accounts) and can affect your credit and ability to sell property.

Tax Levy

The IRS's legal seizure of property to satisfy a tax debt, including wages, bank accounts, and physical assets. Unlike a lien (which is a claim), a levy is actual collection of property after proper notice.

U.S. Tax Court

A federal court where taxpayers can dispute IRS tax deficiency notices before paying the disputed amount. The Small Tax Case procedure is available for disputes of $50,000 or less, offering a simpler, less formal process.

Statute of Limitations (Tax)

The IRS generally has three years from the filing date to assess additional taxes and ten years to collect assessed taxes. Substantial underreporting of income (over 25%) extends the assessment period to six years.