IRS Audit Guide

Is free tax filing software actually free?

It depends. Most "free" tiers only cover simple W-2 returns with no itemized deductions. Once you add student loan interest, freelance income (1099), or investment gains, you're pushed to a paid tier — typically $30-90. TurboFree and Cash App Taxes are among the most generous free options for simple returns. Always check the fine print before starting.

Should I use tax software or hire a CPA?

For straightforward returns (W-2 income, standard deduction, basic investments), quality tax software handles everything at a fraction of the cost. Consider a CPA if you have complex situations: business ownership, rental properties, stock options, or multi-state filing. A good rule: if your tax situation hasn't changed, software is fine. If something major changed, consult a professional.

When should I itemize deductions instead of taking the standard deduction?

Itemize when your qualifying expenses exceed the standard deduction ($14,600 single / $29,200 married filing jointly for 2024). Common itemized deductions include mortgage interest, state/local taxes (SALT, capped at $10K), charitable donations, and medical expenses exceeding 7.5% of AGI. Most tax software automatically calculates which option saves you more.

How do I file taxes as a freelancer or independent contractor?

You'll report income on Schedule C and pay self-employment tax (15.3%) on net earnings via Schedule SE. Deduct business expenses like home office, equipment, software, and mileage. Make quarterly estimated payments to avoid penalties. Tax software like TurboFax Self-Employed or FreeTaxUSA handles all these forms — budget $50-120 for the filing.

How long does it take to get my tax refund?

E-filed returns with direct deposit typically arrive in 10-21 days. Paper returns take 6-8 weeks. Claiming the Earned Income Tax Credit or Additional Child Tax Credit delays refunds until mid-February by law. You can track status at irs.gov/refunds or through the IRS2Go app. Errors or identity verification flags can add weeks.

What tax deductions do most people miss?

Commonly overlooked deductions include: student loan interest ($2,500 max), educator expenses ($300), HSA contributions, home office (simplified method: $5/sq ft up to 300 sq ft), state sales tax (instead of income tax in no-income-tax states), and charitable mileage (14 cents/mile). Always check if your tax software prompts for these.

What happens if I owe taxes but can't pay?

File your return on time regardless — the failure-to-file penalty (5% per month) is 10x worse than the failure-to-pay penalty (0.5% per month). Then apply for an IRS installment agreement, which lets you pay over 72 months. For debts under $50K, you can set this up online at irs.gov without calling.

What triggers an IRS audit?

Red flags include: income discrepancies between your return and 1099/W-2 forms, unusually high deductions relative to income, large charitable donations, claiming a home office, and round numbers (reporting exactly $5,000 in expenses looks suspicious). Audit rates are highest for incomes over $500K and those claiming EITC. Overall audit rate is under 0.5%.

What is the penalty for filing taxes late?

If you owe money, the failure-to-file penalty is 5% of unpaid taxes per month, up to 25%. If you're getting a refund, there's no penalty for filing late — but you have 3 years to claim it before the IRS keeps your refund. Always file an extension (Form 4868) if you can't make the April deadline; it gives you until October 15.

How are Roth IRA and Traditional IRA contributions taxed differently?

Traditional IRA contributions are tax-deductible now (reducing this year's taxable income) but withdrawals in retirement are taxed as ordinary income. Roth IRA contributions are made with after-tax dollars but grow and can be withdrawn tax-free in retirement. Choose Roth if you expect higher taxes in retirement; choose Traditional if you need the deduction now.

What happens to my taxes when I get married?

Getting married changes your filing status to Married Filing Jointly or Separately, which often lowers your combined tax bill. The MFJ rate brackets are wider than single filer brackets, reducing the rate on income that would have been taxed higher. You may also gain access to credits like the Earned Income Credit that have higher income thresholds for joint filers.

What tax credits do I get for having a baby?

Having a child opens up several valuable credits. The Child Tax Credit provides up to $2,000 per qualifying child under 17, with $1,600 refundable in 2024. You may also qualify for the Child and Dependent Care Credit if you pay for daycare, and the Earned Income Credit which increases significantly when you have a qualifying child.

What tax deductions come with buying a home?

Homeowners can deduct mortgage interest on loans up to $750,000 and property taxes up to the $10,000 SALT cap when they itemize deductions. Points paid on a purchase mortgage are also deductible in the year paid. These deductions only benefit you if your total itemized deductions exceed the standard deduction ($14,600 single / $29,200 MFJ in 2024).

How does divorce affect my taxes?

Divorce changes your filing status — you cannot file jointly for any year where the divorce is finalized by December 31. Alimony paid under pre-2019 agreements is deductible by the payer and taxable to the recipient; post-2018 divorces eliminate that deduction. Child support is never deductible or taxable, and only one parent can claim the child as a dependent each year.

What are the tax steps after a family member dies?

The deceased person's final return covers January 1 through the date of death and must be filed by the normal due date. A surviving spouse can file jointly for the year of death. If the estate earns income during settlement, a separate estate return (Form 1041) may be required. Inherited assets generally receive a stepped-up cost basis, eliminating capital gains on pre-death appreciation.

How do estimated quarterly taxes work for self-employed people?

Self-employed individuals must pay estimated taxes four times a year (April, June, September, January) because no employer withholds taxes from their paychecks. You calculate the estimate using Form 1040-ES, basing it on your expected annual income and self-employment tax. Underpaying can trigger an IRS penalty, so most people aim to pay at least 90% of the current year's tax or 100% of last year's tax.

What is the self-employment tax rate?

Self-employment tax is 15.3% on net self-employment earnings up to $168,600 (2024), covering both the employee and employer portions of Social Security (12.4%) and Medicare (2.9%). Above that threshold, only the 2.9% Medicare tax continues with no cap. The good news: you can deduct half of SE tax as an adjustment to income on your 1040, lowering your taxable income.

How does the home office deduction work specifically?

The home office deduction requires a space used regularly and exclusively for business. You can use the simplified method ($5 per square foot, up to 300 sq ft = $1,500 max) or the regular method based on actual home expenses proportional to office square footage. The regular method often yields a larger deduction but requires tracking utilities, rent or mortgage interest, insurance, and repairs.

What are the two methods for deducting vehicle expenses?

The standard mileage rate (67 cents per mile in 2024) is simpler and available for owned or leased vehicles not previously depreciated under MACRS. The actual expense method deducts the business-use percentage of gas, insurance, repairs, depreciation, and lease payments. You must choose a method in the first year you use the vehicle for business, and switching later has restrictions.

Can self-employed people deduct health insurance premiums?

Yes — self-employed individuals who are not eligible for employer-sponsored coverage can deduct 100% of health, dental, and qualifying long-term care insurance premiums for themselves, a spouse, and dependents. This deduction appears as an adjustment to income (above-the-line), meaning you get it even without itemizing. It cannot exceed your net self-employment profit for the year.

What are capital gains and how are they taxed?

A capital gain is the profit from selling a capital asset like stocks, real estate, or cryptocurrency for more than you paid. Short-term gains (assets held one year or less) are taxed as ordinary income at your regular bracket rate. Long-term gains (held over one year) are taxed at preferential rates of 0%, 15%, or 20% depending on your taxable income, making the holding period a key planning factor.

What is the difference between short-term and long-term capital gains rates?

Short-term capital gains are profits from assets held 12 months or less, taxed at ordinary income rates that can reach 37%. Long-term capital gains on assets held more than 12 months are taxed at 0% (up to ~$47K income for single filers in 2024), 15% (most earners), or 20% (very high earners). Waiting one extra day past the one-year mark can significantly reduce your tax bill.

What is the wash sale rule?

The wash sale rule disallows a capital loss deduction if you buy a "substantially identical" security within 30 days before or after the sale that generated the loss. The disallowed loss isn't gone permanently — it gets added to the cost basis of the replacement shares, deferring the loss to a future sale. The rule applies to stocks, bonds, and options but not to cryptocurrency (currently).

How are cryptocurrency gains taxed?

The IRS treats cryptocurrency as property, so every taxable event — selling, trading one crypto for another, or using crypto to buy goods — triggers a capital gains calculation. Short-term gains (held under a year) are taxed as ordinary income; long-term gains get preferential rates. You also owe income tax on crypto received as payment for services or through mining, at its fair market value on the day received.

How do I report stock options on my taxes?

Tax treatment depends on the option type. Non-qualified stock options (NSOs) create ordinary income when exercised (the spread between grant price and fair market value). Incentive stock options (ISOs) have no regular tax at exercise but may trigger Alternative Minimum Tax (AMT). Both create a cost basis for future capital gains calculations. Your employer should report NSO income on your W-2; ISOs are reported on Form 3921.

How are dividends taxed?

Qualified dividends — paid by US corporations or qualified foreign corporations on stock held long enough — are taxed at the favorable long-term capital gains rates (0%, 15%, or 20%). Ordinary dividends, including most dividends from REITs and short-held stock, are taxed at your regular income rate. Your brokerage reports dividends on Form 1099-DIV, with Box 1a (total) and Box 1b (qualified) clearly separated.

How much can I contribute to a 401(k) in 2024?

Employee elective deferrals to a 401(k) are capped at $23,000 in 2024, plus a $7,500 catch-up contribution if you are age 50 or older (total $30,500). These limits apply across all 401(k) accounts you hold. Total contributions including employer match cannot exceed $69,000 (or $76,500 with catch-up). Traditional 401(k) contributions reduce your current taxable income; Roth 401(k) contributions do not.

What is the tax difference between a traditional IRA and a Roth IRA?

Traditional IRA contributions may be tax-deductible (reducing current-year taxable income), and withdrawals in retirement are taxed as ordinary income. Roth IRA contributions are made with after-tax dollars — no deduction now — but qualified withdrawals in retirement are completely tax-free. The choice depends on whether you expect to be in a higher or lower tax bracket in retirement.

What is a backdoor Roth IRA?

A backdoor Roth IRA is a two-step strategy for high earners who exceed the Roth IRA income limits ($161K single / $240K MFJ in 2024). You make a non-deductible contribution to a traditional IRA, then convert it to a Roth IRA shortly after. If you have no other traditional IRA funds, the conversion is essentially tax-free. The pro-rata rule can create a tax complication if you have pre-tax IRA money elsewhere.

What are required minimum distributions (RMDs)?

RMDs are mandatory annual withdrawals from traditional IRAs and most employer plans starting at age 73 (under current SECURE 2.0 rules). The amount is calculated by dividing your prior year-end account balance by an IRS life expectancy factor. Missing an RMD triggers a 25% excise tax on the amount not withdrawn (reduced to 10% if corrected promptly). Roth IRAs have no RMDs during the original owner's lifetime.

What is a CP2000 notice from the IRS?

A CP2000 is a proposed adjustment notice, not an audit — the IRS matched your return against third-party documents (W-2s, 1099s) and found a discrepancy. It proposes additional tax, interest, and sometimes penalties. You have 60 days to respond: agree and pay, disagree with documentation, or request more time. Ignoring it causes the IRS to assess the proposed amount automatically.

What are the different types of IRS audits?

The three main audit types are: correspondence audit (most common, conducted entirely by mail for simple issues like missing income or mismatched documents), office audit (you meet with an IRS agent at a local IRS office), and field audit (an agent visits your home or business, reserved for complex returns with large amounts at stake). Most taxpayers who are audited face only a correspondence audit.

What triggers an IRS audit?

Common audit triggers include income significantly higher or lower than the average for your occupation, large charitable deductions relative to income, home office deductions, business losses claimed multiple years in a row, unreported income found in IRS matching, and mathematical errors. The overall individual audit rate is under 0.5%, but high earners and certain deductions do elevate your statistical risk.

What are IRS payment plan options?

If you can't pay in full, you can request an installment agreement online. Short-term plans (up to 180 days) are free to set up. Long-term plans charge a setup fee ($31 online if you set up direct debit) and ongoing interest and penalties accrue until the balance is paid. Owing under $50,000 in tax, interest, and penalties typically qualifies for a streamlined online agreement without a financial statement.

What is "currently not collectible" status with the IRS?

Currently Not Collectible (CNC) status means the IRS temporarily stops collection activity because paying would prevent you from meeting basic living expenses. The IRS uses national and local expense standards to evaluate your finances. While in CNC status, interest and penalties still accrue on your balance, and the IRS reviews your situation periodically. It is not debt forgiveness — it is a pause in collection.

How do I amend a tax return?

File Form 1040-X (Amended U.S. Individual Income Tax Return) to correct a previously filed return. Since 2020, 1040-X can be e-filed for the most recent two or three tax years; older years require mailing a paper form. Include any corrected schedules or forms. The IRS typically processes amended returns in 16-20 weeks. If the amendment increases your refund, interest accrues in your favor; if you owe more, pay promptly to stop penalty accrual.

When should I amend my tax return?

Amend when you discover a significant error that affects your tax liability — missed income, an unclaimed credit, or a deduction you forgot. Do not amend for simple math errors; the IRS corrects those automatically. You generally have three years from the original due date to file an amended return and claim a refund. If you under-reported income, amend promptly to limit penalty and interest exposure.

How do I use Form 1040-X to amend my return?

Form 1040-X has three columns: Column A (amounts as originally reported), Column B (the net change), and Column C (corrected amounts). Fill in only the lines that changed and explain the reason for each change in Part III. Attach any supporting documents like corrected W-2s or 1099s. You must file a separate 1040-X for each tax year you are amending — one form cannot cover multiple years.

What is the statute of limitations for IRS audits and amended returns?

The IRS generally has three years from the filing date to audit your return and assess additional tax. That window extends to six years if you under-reported income by more than 25% and has no limit if the IRS suspects fraud or you never filed. You also have three years from the original due date to file an amended return claiming a refund. Keeping records for at least seven years is a safe rule of thumb.

What is the difference between the Child Tax Credit and the Child and Dependent Care Credit?

The Child Tax Credit (up to $2,000 per child under 17) reduces tax owed based solely on having qualifying children — it does not require childcare expenses. The Child and Dependent Care Credit (up to 35% of $3,000 for one dependent, $6,000 for two or more) offsets actual childcare costs you paid so you could work or look for work. Both can be claimed in the same year for the same child.

Who qualifies for the Earned Income Tax Credit?

The Earned Income Tax Credit (EITC) is a refundable credit for low-to-moderate income workers. For 2024, income limits range from about $18,500 (no children, single) to $66,819 (three or more children, MFJ). You must have earned income, a valid SSN, and meet investment income limits ($11,600 max). The maximum credit is $7,830 for three or more children, making EITC one of the most valuable credits for qualifying families.

What is the difference between the American Opportunity Credit and the Lifetime Learning Credit?

The American Opportunity Credit (AOC) gives up to $2,500 per student for the first four years of post-secondary education; 40% ($1,000) is refundable. The Lifetime Learning Credit gives up to $2,000 per tax return (not per student) and applies to any post-secondary courses, with no limit on the number of years — but it is nonrefundable. AOC phases out at higher income levels and cannot be used if the student has a drug conviction.

What are residential energy tax credits?

The Energy Efficient Home Improvement Credit (Form 5695) allows 30% of costs for qualifying upgrades like insulation, exterior windows, heat pumps, and electric panel upgrades, up to $1,200 per year (higher limits for heat pumps and biomass stoves). The Residential Clean Energy Credit gives 30% (no cap) for solar panels, solar water heaters, small wind turbines, and battery storage. Both credits can be claimed through at least 2032.

When does itemizing deductions beat the standard deduction?

Itemizing makes sense when your total deductible expenses — mortgage interest, property taxes (up to $10K SALT cap), charitable contributions, unreimbursed medical expenses above 7.5% of AGI — exceed the standard deduction. In 2024 that is $14,600 for single filers and $29,200 for married filing jointly. The SALT cap means many middle-income homeowners no longer benefit from itemizing since the Tax Cuts and Jobs Act.

Can I deduct student loan interest?

You can deduct up to $2,500 of student loan interest paid each year as an above-the-line deduction (no itemizing required). The deduction phases out for single filers with MAGI between $80,000 and $95,000 and for joint filers between $165,000 and $195,000 in 2024. The loan must have been taken out solely to pay for qualified education expenses, and you cannot be claimed as a dependent on someone else's return.

What are the rules for deducting charitable contributions?

Cash donations to qualified 501(c)(3) organizations are deductible up to 60% of your AGI when you itemize. Donations of appreciated stock are deductible at fair market value up to 30% of AGI, and you avoid capital gains tax on the appreciation. Non-cash donations over $500 require Form 8283; donations over $5,000 require a qualified appraisal. Always get a written acknowledgment for any single donation of $250 or more.

What is the medical expense deduction threshold?

You can deduct medical expenses that exceed 7.5% of your Adjusted Gross Income (AGI) when you itemize. For example, with $80,000 AGI, only expenses above $6,000 are deductible. Qualifying expenses include premiums for insurance not already deducted elsewhere, out-of-pocket doctor and hospital costs, prescriptions, and medically necessary equipment. Cosmetic procedures and most over-the-counter items do not qualify.

What is the SALT deduction cap?

The State and Local Tax (SALT) deduction cap limits your combined deduction for state income taxes (or sales taxes), and property taxes to $10,000 per year ($5,000 if married filing separately) for tax years 2018 through at least 2025. This cap significantly reduced the itemized deduction benefit for taxpayers in high-tax states like California, New York, and New Jersey, pushing many back to the standard deduction.

How do state income tax rates vary across the US?

State income tax structures vary widely. Nine states have no individual income tax at all (Florida, Texas, Nevada, Wyoming, South Dakota, Washington, Alaska, Tennessee, and New Hampshire on wages). Others use flat rates (Illinois at 4.95%) or graduated brackets (California tops out at 13.3%). State taxes can add substantially to your effective rate and must be factored into any income or residency planning.

Which states have no income tax?

Nine states impose no individual income tax on wages and salaries: Alaska, Florida, Nevada, New Hampshire (taxes only dividends/interest, being phased out), South Dakota, Tennessee (only on investment income, fully phased out), Texas, Washington (no income tax; a capital gains tax applies to high earners), and Wyoming. Moving to a no-tax state can produce significant savings for high earners, but may be offset by higher property or sales taxes.

What are state tax reciprocity agreements?

Reciprocity agreements between states allow residents who work in a neighboring state to pay income tax only to their home state, not the state where they work. For example, a Virginia resident working in DC pays only Virginia tax. Without reciprocity, you'd file returns in both states and receive a credit to prevent double taxation. About 30 pairs of states have reciprocity agreements; check both states' rules before assuming you qualify.

What happens if I work in multiple states?

Working in multiple states generally requires filing a nonresident return in each state where you earned income, plus a resident return in your home state. Your home state usually provides a credit for taxes paid to other states, preventing full double taxation. Remote workers complicate this — some states claim the right to tax you based on where your employer is located (the "convenience of the employer" rule). Keep detailed records of days worked in each state.

What are some strategies to reduce taxable income?

Top strategies include maximizing pre-tax retirement contributions (401k, traditional IRA, SEP-IRA), contributing to an HSA if you have a high-deductible health plan, taking above-the-line deductions for student loan interest and self-employed health insurance, and deferring business income to the next year if you expect to be in a lower bracket. Each dollar shifted to tax-advantaged accounts directly reduces your AGI.

How does the timing of income and deductions affect my taxes?

Tax planning often involves shifting income and deductions between years. Deferring a year-end bonus to January keeps income off this year's return. Prepaying January mortgage interest or property taxes in December (if not hitting the SALT cap) pulls deductions forward. Accelerating business expenses before year-end lowers self-employment income. The goal is always to recognize income in a lower-bracket year and deductions in a higher-bracket year.

What is tax-loss harvesting?

Tax-loss harvesting involves selling investments at a loss to offset capital gains elsewhere in your portfolio, reducing your tax bill. Net capital losses can also offset up to $3,000 of ordinary income per year, with excess losses carried forward indefinitely. The wash-sale rule prevents you from immediately repurchasing the same or substantially identical investment — wait 31 days or buy a similar (but not identical) holding.

What is bunching charitable deductions?

Bunching involves concentrating two or more years of charitable donations into a single tax year so the total pushes your itemized deductions above the standard deduction, giving you a full deduction. In alternating years you take the standard deduction. Donor-advised funds make bunching easier — you contribute a large lump sum in one year (full deduction now), then recommend grants to charities over time.

Is TurboTax worth paying for?

TurboTax is worth it for people with complex returns — self-employment income, investments, rental properties, or life changes — who value step-by-step guidance and audit support. For simple W-2 returns with standard deductions, TurboTax Free Edition or a competitor's free tier handles the job without cost. The main downsides are aggressive upselling and higher pricing compared to alternatives like H&R Block or FreeTaxUSA.

How does H&R Block compare to TurboTax?

H&R Block and TurboTax are very comparable in accuracy and ease of use for most filers. H&R Block is generally $10-$30 cheaper at equivalent tiers and offers in-person office support if you want a human to review your return. TurboTax has a slight edge in interface polish and self-employed guidance. Both offer free federal filing for simple returns. Price-shopping between the two (and FreeTaxUSA) before you start is worth five minutes.

What are IRS Free File options?

IRS Free File offers two paths: Free File Fillable Forms (electronic versions of paper forms, no guidance, all incomes) and Free File software (guided programs from IRS partners, free federal filing if your AGI is $79,000 or below in 2024). The software partners include well-known brands. Some states have free state filing too. Access Free File only through IRS.gov to avoid being upsold to paid products.

When should I use a CPA instead of tax software?

Consider a CPA when you have complex situations: owning a business with employees or significant assets, a major tax event like selling a business or inherited property, multi-state filing obligations, significant investments or foreign accounts (FBAR/FATCA), or unresolved IRS issues. A CPA's fee ($200-$500+ for a personal return) often pays for itself in tax savings and peace of mind for complicated situations.

What are red flags that mean I need a CPA?

Red flags that signal you need professional help: you received an IRS notice or audit letter, you have unreported foreign bank accounts, you sold a business or significant assets, you have complex pass-through income from a partnership or S-corp, you owe back taxes with penalties accruing, or your return involves the Alternative Minimum Tax (AMT) and incentive stock options. DIY software can't substitute for a professional's judgment in these cases.