Start with the documents you should keep permanently. Your Articles of Organization, operating agreement, EIN confirmation letter, and any amendments to these documents should never be discarded. If you ever need to open a bank account, bring on a partner, apply for financing, or dissolve the LLC, you’ll need these on hand.

Tax returns and everything supporting them should be kept for at least seven years. That covers federal returns, California Form 568, and the associated schedules. The IRS typically has three years to audit you, but that extends to six years if they suspect a substantial understatement of income. Seven years gives you a comfortable buffer. Keep the supporting documents too, meaning the receipts, invoices, mileage logs, and expense records that back up every number on those returns.

Bank and credit card statements are essential. These are your first line of defense if the IRS or California Franchise Tax Board has questions. They show money coming in and going out with dates and vendors attached. Even if you lose individual receipts, statements provide a transaction-level record that auditors will accept as partial documentation. Keep at least seven years of statements for every account tied to the business.

Payroll records require special attention if you have employees. California requires employers to maintain payroll records for at least four years, but federal guidelines push that closer to seven. This includes pay stubs, W-4s, timesheets, benefit records, and copies of W-2s you issued. Working with a small business bookkeeping service helps ensure these records are organized from the start rather than scrambled together later.

Keep all contracts, agreements, and vendor invoices. Leases, service agreements, independent contractor agreements, and the invoices tied to them all matter. If you issue 1099s to contractors, keep the W-9s they provided along with payment records. California follows federal 1099 requirements, and you need documentation showing who you paid and why.

Your financial statements, specifically your profit and loss statement and balance sheet, should be saved each month or at minimum each year. These reports tell the story of your business performance over time. They’re useful for tax prep, loan applications, and your own decision-making. If you ever sell the business or bring in investors, years of clean financial statements build credibility.

Don’t overlook California-specific records. Your LLC’s $800 annual franchise tax payments, any estimated tax payments to the FTB, and your Statement of Information filings with the Secretary of State should all be retained. These prove you’ve stayed in good standing with the state.

For organization, digital is your best option. Scan paper receipts and store everything in a cloud-based system. Paper fades, gets lost, or ends up in a box you’ll never open again. A digital backup tied to your full-service bookkeeping process means records are categorized and accessible when you actually need them.

The general rule is simple. If it involves money coming in, money going out, an agreement with another party, or a filing with a government agency, keep it. When in doubt, hold onto it for seven years. The cost of storing a digital file is nothing compared to the cost of not having a record when someone asks for it.