Documents You Must Gather Before Filing Your 2025 Taxes

Meta Description: Avoid delays and missed deductions. Here's exactly which documents you need to gather before filing your 2025 taxes — for individuals and small business owners.

Most people don't lose money at tax time because they paid too much — they lose it because they weren't prepared. Walking into tax season without the right documents is like trying to build furniture without the instructions: you'll get somewhere, but you'll probably miss something important.

Whether you're a W-2 employee, a freelancer juggling multiple clients, or a small business owner managing payroll and expenses, gathering your documents before you file is the single most effective thing you can do to protect your refund, avoid IRS delays, and make the entire process far less painful. Here's a clear, practical breakdown of exactly what you need — and why each piece matters more than you might think.

Your Income Documents: The Foundation of Every Return

Before anything else, the IRS needs to know what you earned. This sounds simple, but income comes from more places than most people realise — and missing even one source can trigger a notice from the IRS or cost you an accurate refund calculation.

If you're a traditional employee, you'll need your W-2 form, which your employer is legally required to send you by January 31, 2025. This single document captures your wages, federal and state taxes withheld, and Social Security contributions for the year.

If you freelanced, consulted, or took on side work, look out for 1099-NEC forms from any client or platform that paid you $600 or more during the year. Apps like Uber, Etsy, and PayPal now issue 1099-K forms to sellers and service providers who processed over $5,000 in payments in 2024 — a threshold that dropped significantly from prior years as the IRS phases in new reporting rules. Even if you don't receive a form, that income is still taxable and still needs to be reported.

Other income documents to round up include 1099-INT (interest income from bank accounts), 1099-DIV (dividends from investments), 1099-R (distributions from retirement accounts or pensions), and SSA-1099 (Social Security benefits). If you sold any investments in 2024, your brokerage will issue a 1099-B detailing your gains and losses — a document that's easy to overlook and costly to miss.

Deduction Records: Where Most People Leave Money Behind

This is where preparation truly pays off. Deductions reduce your taxable income — which means a lower tax bill or a larger refund — but they require documentation to claim. The IRS doesn't take your word for it.

For individuals, the most commonly overlooked deduction category is charitable contributions. If you donated to a qualified nonprofit in 2024, you'll need written acknowledgment for any single gift of $250 or more. Non-cash donations — clothing, furniture, electronics — require a receipt from the organisation showing the date and a description of what was donated. Many people donate throughout the year and lose track by January; a quick search of your email confirmations now can recover real money.

Homeowners should gather their Form 1098 from their mortgage lender, which shows how much mortgage interest and property tax you paid — both potentially deductible if you itemise. Medical expenses paid out-of-pocket are deductible if they exceed 7.5% of your adjusted gross income (AGI), so keep records of unreimbursed costs like dental work, vision care, prescriptions, and health insurance premiums paid privately.

If you worked from home in 2024 — and this applies primarily to self-employed individuals, not remote employees — document your dedicated workspace. The simplified method allows a deduction of $5 per square foot, up to 300 square feet. The actual expense method requires tracking a percentage of your rent or mortgage, utilities, and internet costs. Either way, you'll want a floor plan or rough measurement and your lease or mortgage statement on hand.

Small Business and Self-Employment Records: Go Deeper Than the Obvious

For small business owners and freelancers, this category can make the most significant difference in what you owe. But it requires the most organisation.

Start with a complete record of your business income — not just 1099s, but every invoice you issued and payment you received. If your books weren't reconciled monthly through 2024, now is the time to sit down with your bank statements and accounting software (QuickBooks is ideal for this) and reconstruct an accurate income total. The IRS can and does cross-reference reported income with 1099s filed by your clients.

On the expense side, gather records for every business-related cost: software subscriptions, professional services, advertising, travel, meals (50% deductible for legitimate business meals), equipment, and office supplies. A business vehicle? You'll need either your total mileage log for the year or actual expense records. The standard mileage rate for 2024 is 67 cents per mile — a meaningful deduction if you drove regularly for client visits, deliveries, or job sites.

One often-missed deduction for self-employed individuals: self-employed health insurance premiums. If you paid for your own health, dental, or long-term care insurance in 2024 and weren't eligible for employer-sponsored coverage, those premiums may be fully deductible — not just on Schedule A (the itemised deductions form), but directly from your gross income. That's a particularly powerful deduction because it lowers your AGI, which in turn affects your eligibility for other benefits.

Also gather documentation for any retirement contributions you made — SEP-IRA, SIMPLE IRA, or Solo 401(k) contributions are deductible and are among the most effective ways self-employed professionals reduce their tax burden legally.

Prior Year Tax Return and Estimated Tax Payments

This document is frequently left off preparation checklists, but it matters. Having last year's tax return — specifically your 2023 federal return — on hand gives your CPA a baseline for your filing status, your prior-year AGI (which is needed for e-filing identity verification), and any carryforward items like capital loss carryovers or unused credits.

If you made quarterly estimated tax payments throughout 2024 — which the IRS requires for self-employed individuals who expect to owe $1,000 or more at filing — gather your records of each payment. These are typically made in April, June, September, and January and are tracked on IRS Form 1040-ES. Underpaying estimated taxes can result in a penalty even if you file on time, so confirming your actual payments now protects you from a surprise.

If you received any advance Child Tax Credit payments or Premium Tax Credit for health insurance purchased through the ACA Marketplace, you'll need Letter 6419 and Form 1095-A, respectively. These must be reconciled on your return — and getting them wrong is one of the most common reasons the IRS delays refunds.

Personal Information and Supporting Identification Documents

This section is brief but non-negotiable. Before filing, confirm you have the following: Social Security numbers (or Individual Taxpayer Identification Numbers) for yourself, your spouse, and any dependents you're claiming. If you had a baby, got married, or went through a divorce in 2024, those life changes affect your filing status and potentially your credits — make sure your documents reflect your actual situation.

If you're expecting a refund via direct deposit, have your bank account and routing number ready. If you're filing in multiple states — common for people who moved, worked remotely for an out-of-state employer, or own a business with nexus in more than one state — keep records of the days you spent working in each state. Multi-state filings are more complex than they appear and benefit enormously from a CPA who handles them regularly.

Walk Into Tax Season Ready — Not Rushed

Tax season doesn't have to feel like a fire drill. When you gather your documents methodically — income records first, then deductions, then business records, then prior-year context, and finally identification details — you give yourself the clearest possible picture of your financial year. That clarity is what allows your return to be accurate, complete, and filed without delay.

The difference between a stressful tax season and a smooth one usually isn't complexity — it's preparation. And the difference between a good tax outcome and a great one is often having someone in your corner who actually knows your situation.

At Bookwise CPA, that's exactly what you get. A dedicated, licensed CPA who reviews your documents carefully, identifies every deduction you qualify for, explains your return in plain English, and handles everything from filing to any IRS correspondence — all with less than a 1-hour response time and zero handoffs to someone who doesn't know your name.

If you're ready to walk into 2025 tax season with confidence, book your free 30-minute consultation at www.bookwisecpa.com. No obligation, no preparation required — just clarity on where you stand and what comes next.