The IRS expects you to back up every number on your tax return. That means keeping organized records of income, expenses, assets, payroll, and entity documents. Here’s what matters and how long to hold onto it.

Income records include bank statements showing deposits, invoices you sent to clients, 1099s you received, sales reports, and contracts that document revenue. If you receive cash payments, keep a log with dates, amounts, and who paid you. Undocumented income is one of the fastest ways to create problems with the IRS.

Expense records include receipts, credit card statements, canceled checks, and vendor invoices for every business expense you claim. The IRS wants to see the amount, date, business purpose, and who you paid. A credit card statement by itself isn’t always enough. The underlying receipt showing what was actually purchased is what holds up in an audit.

Bank and credit card statements should be saved monthly for all business accounts. These serve as your backup when individual receipts go missing and help during reconciliation. Keep statements for every account tied to the business, even if activity was minimal in a given month.

Payroll records include W-4s from employees, payroll reports, quarterly 941 filings, annual W-2s and W-3s, and documentation for all tax deposits. If you use subcontractors, keep W-9s and copies of the 1099s you issued. Florida doesn’t have a state income tax, but you still need to maintain federal payroll records and any reemployment tax documentation.

Asset and depreciation records cover purchase receipts, invoices, and financing documents for vehicles, equipment, furniture, and property improvements. You need the purchase date, cost, and how the item is being depreciated. Keep these for as long as you own the asset plus the retention period after you sell or dispose of it.

Vehicle records deserve special attention. If you use a vehicle for business, keep a mileage log showing dates, destinations, business purpose, and miles driven. The IRS is strict about vehicle deductions. Estimates and reconstructed logs from memory don’t hold up well during an audit.

Entity and formation documents like articles of organization, your EIN confirmation letter, operating agreements, and any amendments are permanent records. Never throw these away.

The general retention rule is three years from the date you filed the return. But there are important exceptions. If the IRS suspects you underreported income by more than 25%, they can go back six years. Payroll tax records should be kept at least four years. Asset records need to stick around until you dispose of the asset plus seven years after that. When in doubt, seven years is a safe default.

Digital storage is better than paper. Scan receipts, save bank statements as PDFs, and store everything in folders organized by year and category. If you’re using QuickBooks, attach receipts directly to transactions so your documentation lives alongside your books.

The biggest recordkeeping mistakes we see aren’t dramatic. They’re small things like not saving receipts for deductible expenses, mixing personal and business spending on the same account, or waiting until tax season to organize a year’s worth of paperwork. Consistent recordkeeping throughout the year makes business tax preparation faster, cheaper, and far less stressful.

If staying on top of this feels like more than you can manage while running your business, that’s completely normal. Full-service bookkeeping exists specifically so your records stay organized month to month and you’re not scrambling to piece things together when it’s time to file. The goal is a system that works year-round, not a last-minute rescue every April.