Gather Your Personal Information

Before you can calculate income or claim deductions, you need a complete set of personal identification details. These are the building blocks of your return and must be accurate to prevent processing delays or rejection.

  • Social Security numbers (SSNs) for yourself, your spouse, and each dependent. Double-check each number against the actual Social Security cards. An incorrect SSN for a dependent can disqualify you from valuable credits like the Child Tax Credit. If you or a dependent does not have an SSN, you may need an Individual Taxpayer Identification Number (ITIN) instead. Apply early using Form W-7 if needed.
  • Date of birth for each individual listed on the return. This helps the IRS verify identities and eligibility for age‑based credits and deductions.
  • Previous year’s tax return. Use last year’s Form 1040 as a reference for carryover items (capital losses, charitable contribution carryovers, net operating losses) and to confirm your prior-year adjusted gross income (AGI) for e‑file verification. If you changed tax software, having the prior return handy avoids transcription errors.
  • Bank account and routing numbers for direct deposit of your refund. Direct deposit is faster than a paper check and reduces the risk of lost mail. Use a savings or checking account; prepaid debit cards may also accept refunds if they have a routing number. Confirm the account is open in your name to avoid rejection.
  • Identity Protection PIN (IP PIN) if you received one from the IRS. An IP PIN prevents fraudulent filings and must be included with your return. If you misplaced it, retrieve it from the IRS’s online IP PIN tool. Taxpayers who are victims of identity theft may have received a CP01A notice with their IP PIN.

Keep these documents in a secure folder or encrypted digital file. Many tax professionals recommend storing them alongside your tax software records for easy access. Consider using a safe deposit box for paper originals and a cloud-based service with two-factor authentication for digital copies.

Collect Income Documents

All sources of income must be reported, even if you don’t receive a Form W‑2 or 1099. Missing income can trigger an IRS notice or audit. Organize these documents as you gather them. Remember that the IRS receives matching copies of most income documents, so discrepancies are easily flagged.

W‑2 Forms: Wages and Salaries

Every employer you worked for during the year should issue a W‑2 by January 31. If you haven’t received one, contact your employer immediately. Check each box for accuracy, especially the reported wages and federal tax withheld. If you changed names due to marriage or divorce, ensure the W‑2 reflects your current legal name to match your Social Security record.

Common mistake: Reporting Box 1 wages from a W-2 but not also including Box 3 Social Security wages and Box 5 Medicare wages when required for specific calculations (like the Saver’s Credit).

1099‑NEC and 1099‑K: Freelance, Gig, and Contract Work

If you performed side work, filled out forms, or drove for a rideshare company, you’ll likely receive a 1099‑NEC (Nonemployee Compensation) or 1099‑K (Payment Card and Third Party Network Transactions). Even if you don’t receive a form, you must report all income over $400 for self‑employment tax purposes. For gig economy workers, track your earnings from apps like Uber, Lyft, DoorDash, or Etsy. Note that the 1099‑K threshold has changed—for 2023 returns, the IRS delayed the $600 threshold, but for 2024 returns the lower threshold may apply. Stay updated via the IRS Gig Economy Tax Center.

Self-employed individuals should also gather records of business expenses: mileage, supplies, home office costs, and health insurance premiums. Use a mileage log or app like MileIQ to substantiate deductions.

1099‑INT and 1099‑DIV: Interest and Dividends

Banks, brokerages, and mutual funds issue these forms when you earn more than $10 in interest or dividends. Even small amounts count and must be included. If you sold investments, also look for a 1099‑B which shows capital gains and losses. Consolidate all brokerage forms—some firms send a composite 1099 containing multiple sub‑forms. Verify that cost basis information is correct, especially for shares acquired before 2011 (when basis reporting became mandatory for brokers).

Tip: If you received dividends that are “qualified,” they are taxed at lower capital gains rates. Check Box 2b on Form 1099-DIV to confirm.

Other Income Sources

  • Rental property income – include rents received minus allowable expenses such as repairs, mortgage interest, property taxes, and depreciation. If you rented out a room on Airbnb for fewer than 14 days during the year, that income may be tax-free.
  • Unemployment compensation – reported on Form 1099‑G. Note that unemployment is fully taxable at the federal level; some states also tax it. You can choose to have federal tax withheld voluntarily (at 10%) by filing Form W-4V.
  • Alimony received (for divorce agreements executed before 2019) – reported as income on Line 2a of Form 1040. For agreements executed after 2018, alimony is no longer deductible by the payer nor includable by the recipient.
  • Gambling winnings – reported on W‑2G forms, but you can also deduct losses (subject to limits). You must itemize to deduct gambling losses, and you can only offset winnings, not other income.
  • Social Security benefits – reported on Form SSA‑1099; some benefits may be taxable depending on your combined income (AGI + nontaxable interest + half of Social Security benefits). Use the IRS Social Security Benefits Worksheet to determine if any portion is taxable.
  • Miscellaneous income – jury duty pay, canceled debts (Form 1099-C), and awards. If debt was canceled due to insolvency or bankruptcy, you may be able to exclude it using Form 982.

If you have digital currency transactions (cryptocurrency), you may have additional reporting obligations. The IRS asks on Form 1040 whether you received, sold, exchanged, or disposed of any digital asset. Keep transaction records handy, including wallet addresses, dates, fair market values, and cost basis. Services like CoinTracker or Koinly can help generate tax reports. The IRS has issued guidance on virtual currency—see IRS Virtual Currency FAQ.

Organize Deduction and Credit Documents

Deductions and credits are where you can significantly reduce your tax bill, but they require solid documentation. The standard deduction for 2023 is $13,850 for single filers and $27,700 for married filing jointly; for 2024 those amounts rise to $14,600 and $29,200 respectively. Itemizing can pay off if your qualifying expenses exceed those amounts. Separate your documents into the following categories:

Medical and Dental Expenses

You can deduct only the portion that exceeds 7.5% of your adjusted gross income (AGI). Gather receipts, insurance statements, and records for:

  • Doctor, dentist, and specialist visits (copays and deductibles)
  • Prescription medications and insulin (over‑the‑counter items like vitamins are not deductible unless prescribed)
  • Long‑term care insurance premiums (subject to age‑based limits)
  • Transportation costs related to medical care (mileage at the standard medical rate of 22 cents per mile for 2023–2024, or actual expenses for gas and parking)
  • Health insurance premiums, including COBRA and Medicare Part B and D (if not paid with pre‑tax dollars through an employer plan)
  • Home modifications for disability, such as wheelchair ramps or wider doorways

Note: Premiums paid through an employer’s pre‑tax cafeteria plan cannot be deducted. Also, amounts reimbursed by health savings accounts (HSAs) or flexible spending accounts (FSAs) are not deductible.

Charitable Contributions

If you itemize, donations of cash or property to qualified organizations can be deducted. Keep bank records, payroll deduction records, or written acknowledgments from charities for any donation of $250 or more. Non‑cash donations over $500 require additional paperwork (Form 8283). For donations of vehicles, boats, or airplanes worth more than $500, stricter rules apply—the charity must provide Form 1098-C if the vehicle is sold.

Tip: Donations of appreciated assets (stocks, mutual funds held over one year) allow you to deduct the fair market value and avoid paying capital gains tax. Consider donating appreciated securities instead of cash if you itemize. Also, check if your state offers a tax credit for donations to certain charities (common for education or poverty relief funds).

For 2023 and 2024, there is no above‑the‑line charitable deduction for non‑itemizers (the temporary $300/$600 deduction expired after 2021).

Mortgage Interest and Real Estate Taxes

Your lender will send Form 1098 if you paid $600 or more in mortgage interest. If you own real estate, also gather property tax receipts. State and local taxes (including real estate and income taxes, or sales taxes if you choose) are capped at $10,000 ($5,000 if married filing separately). Points paid on a mortgage are generally deductible over the life of the loan, unless they are for a refinance—then they must be amortized. If you bought a home this year, ask your lender for the closing statement (HUD-1 or Closing Disclosure) to verify points and prepaid interest.

Education Expenses and Student Loan Interest

  • Form 1098‑T from your school verifies tuition and fees. Use it to claim the American Opportunity Tax Credit (AOTC) worth up to $2,500 per student (partially refundable) or the Lifetime Learning Credit (LLC) worth up to $2,000 per return. The AOTC is limited to the first four years of post‑secondary education; the LLC has no limit on years but is nonrefundable. You cannot claim both for the same student in the same year.
  • Student loan interest deduction – you can deduct up to $2,500 of interest paid on qualified student loans, even if you don’t itemize. Your lender will send Form 1098‑E. The deduction phases out for higher‑income taxpayers (starting at $75,000 AGI for single filers in 2023).
  • 529 plan withdrawals – contributions to a 529 plan are not federally deductible, but earnings grow tax‑free if used for qualified education expenses (including up to $10,000 per year for K‑12 tuition). Keep receipts for room and board, computers, and fees to substantiate non‑taxable withdrawals.

Childcare and Dependent Care Costs

If you paid for daycare, summer camp, or after‑school care for a child under 13 (or a disabled dependent or spouse), collect receipts and the provider’s tax ID number or Social Security number. These expenses support the Child and Dependent Care Credit, which can cover up to 35% of qualifying expenses (maximum $3,000 for one dependent, $6,000 for two or more). The credit is nonrefundable, but the expenses reduce your taxable income indirectly. Note: Expenses paid to a family member (unless that relative is your spouse or a child under 19) may still qualify—verify with the provider’s TIN.

Also, if your employer offers a Dependent Care FSA (up to $5,000 pre‑tax), any expenses reimbursed through that account cannot be used for the credit.

Check for Additional Tax Credits

Credits reduce your tax dollar‑for‑dollar, making them more valuable than deductions. Many credits are refundable, meaning you can receive a refund even if you owe no tax. Be sure to evaluate these commonly overlooked credits:

Earned Income Tax Credit (EITC)

Designed for low‑ to moderate‑income workers, the EITC can be worth up to $7,430 (2023) or $7,830 (2024) with three or more qualifying children. Eligibility depends on your filing status, earned income, and number of qualifying children. Use the IRS’s EITC Assistant tool to determine if you qualify. Even without children, you may be eligible if you earn less than a certain threshold (about $17,640 for single filers in 2023) and are between ages 25 and 64. Beware of common errors: claiming a child who does not meet the residency or relationship tests, or incorrect AGI from Social Security benefits.

Child Tax Credit

For each qualifying child under age 17, you may claim up to $2,000 per child (partially refundable up to $1,600 per child in 2023, $1,700 in 2024). The credit phases out for higher‑income taxpayers (starting at $200,000 AGI for single filers, $400,000 for joint filers). Make sure you have each child’s SSN and age documentation. The credit is not available for dependents who are not U.S. citizens, nationals, or residents.

Energy‑Efficient Home Improvements

If you installed qualifying energy‑efficient windows, doors, insulation, or heat pumps, you may claim the Energy Efficient Home Improvement Credit (up to 30% of costs, with annual caps). Keep manufacturer certifications and receipts. Also check for the Residential Clean Energy Credit for solar panels, wind turbines, or battery storage (30% of cost with no dollar limit through 2032). This credit can be carried forward if you don’t have enough tax liability. Ensure the equipment meets the Consortium for Energy Efficiency (CEE) highest efficiency tier for heat pumps and water heaters.

Other Credits Worth Reviewing

  • Premium Tax Credit – if you bought health insurance through the Marketplace, reconcile your advance credit on Form 8962. Under the American Rescue Plan and Inflation Reduction Act, the credit is expanded through 2025 with no income cap for eligibility (based on 8.5% of household income).
  • Saver’s Credit – for contributions to a retirement account (IRA, 401(k), etc.) if your income is below a certain level ($36,500 for single filers in 2023, $73,000 for joint filers). The credit is worth up to $1,000 ($2,000 for joint filers) and is nonrefundable. Use Form 8880.
  • Adoption Credit – for qualified adoption expenses (nonrefundable, but can carry forward up to five years). For 2023, the maximum credit is $15,950 per child. Expenses include adoption fees, court costs, attorney fees, and travel.
  • Foreign Tax Credit – if you paid foreign income taxes on foreign-earned income, you can claim a credit (or deduction) using Form 1116. This is common for investors in international stocks or for expatriates.

Review and Verify Your Information

Errors are the most common reason for IRS correspondence and refund delays. Before you send anything, run through this verification checklist:

Cross‑Check Numbers

  • Compare your total income from all W‑2s and 1099s to the amounts you enter on your return. Use a spreadsheet or the tax software’s import feature to minimize manual entry errors.
  • Verify that your Social Security number and those of your spouse and dependents are entered exactly as shown on the cards. Be mindful of middle initials or suffixes (Jr., III) if they are present on the card.
  • Confirm your bank account routing and account numbers (double‑check each digit). A wrong number can send your refund to someone else, and recovering it can take months.
  • Make sure you’ve entered the correct prior‑year AGI or IP PIN for e‑file signature. If you used the Non‑Filer tool last year, your prior AGI may be $0. Use the IRS Get Transcript tool to confirm your prior AGI if you are unsure.

Check for Math Errors

Manual returns are prone to simple arithmetic mistakes. Tax software calculates automatically, but if you’re filing by hand, add and subtract twice. Watch for transposed numbers, especially on large amounts like mortgage interest. Common errors: miscalculating the taxable portion of Social Security, or forgetting to apply the lower $10,000 limit on state and local taxes.

Review Filing Status

Your filing status affects your tax rate, standard deduction, and eligibility for credits. Common mistakes include filing as Head of Household when you don’t meet the qualifying person rule (e.g., the dependent must live with you more than half the year and cost more than half the household expenses), or Married Filing Separately when Joint would be more beneficial. Use the IRS What Is My Filing Status? tool if you’re unsure. Also consider that Married Filing Separately can sometimes be advantageous if one spouse has high medical expenses or student loan payments tied to income-driven repayment plans.

Look for Red Flags

The IRS uses automated filters to spot anomalies. Avoid common audit triggers such as:

  • Reporting a large charitable deduction relative to your income (often flagged if above 20% of AGI, but can be justified with proper documentation).
  • Claiming a home office deduction for a space that isn’t exclusively used for business—or using the simplified method (no documentation) but also claiming depreciation that complicates future sales.
  • Excessive unreimbursed employee expenses (most are suspended through 2025, but certain categories like Armed Forces reservist travel or performing artist expenses may still be deductible). Check if you qualify for the rare exceptions.
  • Large business losses that look like hobby losses—the IRS expects a profit in at least three out of five years for an activity to be considered a business.

File Your Taxes

Now it’s time to submit. Your choice of method and timing can affect your speed of refund and peace of mind.

E‑file vs. Paper Return

E‑file is faster, more accurate, and typically yields a refund within 21 days (vs. six to eight weeks for a mailed paper return). If you owe, e‑file with a payment plan or direct pay still offers faster confirmation. Paper returns are more error‑prone and subject to manual processing delays. As of 2023, the IRS has cleared most of its backlog, but paper still lags. If you e‑file, you can also check refund status using the IRS2Go app or the “Where’s My Refund?” tool on IRS.gov.

Tax Software vs. Professional Preparation

Many taxpayers benefit from using reputable software like TurboTax, H&R Block, or Free File options if your income qualifies. Software guides you step‑by‑step and performs error checks. However, if you have complex investments, self‑employment income, rental properties, multiple rental properties, or significant life changes (marriage, divorce, home sale, inheritance), a CPA or enrolled agent can provide personalized advice and reduce audit risk. Compare options at the IRS Free File site to see if you qualify for free guided preparation. For those with simple returns, IRS Free File offers brand-name software at no cost. Additionally, the Volunteer Income Tax Assistance (VITA) program provides free tax help for low‑income taxpayers, persons with disabilities, and limited English speakers.

Deadline and Extensions

The standard deadline is April 15 (or the next business day if it falls on a weekend or holiday). If you cannot finish on time, file Form 4868 to get an automatic six‑month extension to October 15. Important: an extension gives you more time to file, but not more time to pay. Estimate what you owe and pay by April 15 to avoid penalties and interest. The failure‑to‑pay penalty is 0.5% per month of unpaid tax (capped at 25%). Use the IRS Direct Pay tool or the Electronic Federal Tax Payment System (EFTPS) for secure payments. If you can’t pay the full amount, set up a payment plan online (installment agreement) to minimize penalties. The IRS also offers a temporary collection delay for severe hardship.

State taxes: Most states also require a return. Check your state’s deadline—most align with the federal deadline, but some (like Hawaii, Iowa) may have different dates. Also, remember state tax extensions may require a separate form.

Keep Records for Future Reference

Once you’ve filed, your work isn’t done. Proper recordkeeping protects you if the IRS asks questions or if you need to amend a return.

  • Save copies of your filed return and all supporting documents – W‑2s, 1099s, receipts, and canceled checks. Digital copies are fine (e.g., scanned PDFs) as long as they are legible. Consider using a password‑protected cloud service like Google Drive (encrypted before upload) or an encrypted external hard drive.
  • Store records for at least three years from the date you filed or the due date of the return (whichever is later). The IRS generally has three years to audit you. For substantial underreporting of income (over 25% omission), the window extends to six years. Keep records for fraud cases indefinitely. Also, if you filed a claim for a loss from worthless securities, the statute is seven years.
  • Keep records related to asset purchases or improvements (home, stock, business equipment) until the statute of limitations expires for the year you sell the asset. For example, if you sell your home in 2032, keep the purchase and improvement records from 2022 for at least three years after filing your 2032 return. For stocks, keep purchase confirmations until you sell and report the gain or loss.
  • Amended returns: If you discover an error after filing, use Form 1040-X to correct it. You generally have three years from the original due date to claim a refund. Keep all amendment paperwork with your original records.

Also notify a trusted person of where your records are stored in case of emergency. Consider creating a “tax binder” with a yearly checklist and tabs for each category. Updating it annually makes future preparation even easier.

Following this expanded checklist transforms tax preparation from a last‑minute panic into a manageable, methodical process. By gathering your information early, verifying every detail, and filing correctly, you minimize errors, maximize savings, and meet the deadline with confidence. Start now—your future self will thank you.