Your LLC formation documents come first. Keep your Articles of Organization filed with the Arizona Corporation Commission, your Operating Agreement, EIN confirmation letter from the IRS, and any amendments to these documents. These don’t expire and should be stored permanently. You’ll need them when opening bank accounts, applying for loans, or if your ownership structure is ever questioned.

Bank and credit card statements should be saved for every account connected to your business. These are the backbone of your financial records and the primary source for reconciling your books. Download them monthly and store digital copies even if your bank keeps them online. Banks typically only provide a few years of history, and you may need older statements for an audit or legal matter.

Save receipts for all business expenses. The IRS can disallow deductions if you can’t produce documentation. Digital copies are perfectly acceptable, so use a scanner or phone app to capture receipts as you get them rather than letting paper pile up in a drawer. For any expense over $75, the IRS specifically expects a receipt. For meals and entertainment, note who you met with and the business purpose.

Tax returns and all supporting documents should be kept for at least seven years. This includes your federal and Arizona state returns, quarterly estimated tax payment records, and any correspondence with the IRS or Arizona Department of Revenue. If your LLC collects Transaction Privilege Tax (Arizona’s version of sales tax), keep all TPT filings and supporting sales records for at least four years per Arizona requirements.

Payroll records need to be retained for at least four years per IRS guidelines. This includes W-4s, timesheets, pay stubs, quarterly 941 filings, annual W-2s and W-3s, and unemployment tax records. Arizona also requires you to maintain records related to state withholding. If you use subcontractors, keep all 1099s and W-9s on file for at least four years as well.

Contracts, invoices, and accounts receivable records should be saved for the life of the agreement plus several years. If a customer disputes a payment three years from now, you need the original invoice and contract terms to resolve it. Same goes for vendor agreements and any lease or loan documents.

A bookkeeper in Chandler can help you set up a system for organizing these records so you’re not scrambling when tax season hits or if you ever face an audit. The goal is to build habits that make record-keeping part of your routine rather than a year-end emergency.

As a general rule, keep most financial records for at least seven years. That covers the IRS statute of limitations for most situations. Some records like formation documents, property records, and major asset purchases should be kept permanently. When in doubt, don’t throw it away.

The format of your records matters less than their completeness. Digital storage is fine as long as files are backed up and organized in a way that you can actually find things. A folder structure by year and category works well. Full-service bookkeeping keeps your financial data organized in real time so your records are always current and accessible rather than scattered across shoeboxes and email inboxes.

Good record-keeping protects you in three ways. It keeps you compliant with Arizona and federal requirements. It gives you the documentation to defend your deductions if audited. And it provides the financial clarity you need to actually understand how your business is performing.