How to Organize Business Files and Documents

To organize business files, choose one main folder structure that matches how your business works, name every file the same way, give each person access only to what they need, back everything up, and keep each record for as long as the rules require before archiving or deleting it. In the US, IRS Publication 583 sets out how long tax records have to be kept; ask your accountant how those rules apply to you.

1. Choose a Main Folder Structure

Pick one way to divide your files and use it everywhere. Common choices:

• By area: Clients, Finance, Legal, Marketing, Operations, Team.
• By client or project: one folder per client, with the same subfolders inside each, such as Contracts, Work, Invoices and Correspondence.
• By year inside each area: Finance/2026/Expenses, so records for one tax year sit together.

Keep the structure shallow, two or three levels deep, so files are quick to find.

2. Use One Naming Convention

Name files so they sort in a useful order and can be found by search. One pattern: YYYY-MM-DD_client_document_version, for example 2026-03-04_acme_contract_v2.pdf. Starting with the date in year-month-day order keeps files in date order. Write the convention down and use it for every new file.

3. Control Who Can See What

Give each person access only to the folders they need for their work. Keep finance, payroll and legal folders restricted, and remove access when someone leaves.

4. Back Up and Keep Versions

Keep at least one copy of your files somewhere other than the main storage, and check now and then that you can restore from it. Use version history or version numbers in file names so an older draft can be recovered.

5. Keep Records for the Required Time (US)

These are US federal tax rules, quoted from IRS Publication 583, Starting a Business and Keeping Records (revised December 2024). Other laws, and other countries, can require different periods, so ask your accountant what applies to you.

• The general rule: "You must keep your records as long as they may be needed for the administration of any provision of the Internal Revenue Code. Generally, this means you must keep records that support an item of income or deduction on a return until the period of limitations for that return runs out."
• When the period starts: "Unless otherwise stated, the years refer to the period after the return was filed."
• All six periods in Publication 583's Table 3, "Period of Limitations":
  • 3 years if you "Owe additional tax and situations (2), (3), and (4), below, do not apply to you"
  • 6 years if you "Do not report income that you should report and it is more than 25% of the gross income shown on the return"
  • Not limited if you "File a fraudulent return" or "Do not file a return"
  • "Later of: 3 years or 2 years after tax was paid" if you "File a claim for credit or refund after you filed your return"
  • 7 years if you "File a claim for a loss from worthless securities or a bad debt deduction"
• Employment taxes: "If you have employees, you must keep all employment tax records for at least 4 years after the date the tax becomes due or is paid, whichever is later."
• Tax returns: "Keep copies of your filed tax returns."
• Other purposes: "When your records are no longer needed for tax purposes, do not discard them until you check to see if you have to keep them longer for other purposes."
• Electronic records: "All requirements that apply to hard copy books and records also apply to electronic storage systems that maintain tax books and records."

Worked Example: Setting Retention Dates

These are sample dates for a fictional business with one employee. They apply the Publication 583 periods quoted above; ask your accountant which period applies to each of your records.

• Income and expense records for a tax return filed on April 15, 2026 (sample date), in the 3-year case: April 15, 2026 + 3 years = keep until at least April 15, 2029.
• Payroll tax records for a payment due January 31, 2026 and paid January 20, 2026 (sample dates): the later of the two dates is January 31, 2026, so January 31, 2026 + 4 years = keep until at least January 31, 2030.
• The filed return itself: keep a copy, as Publication 583 says.

Put each date on the folder, such as Finance/2025-tax-year (keep until 2029-04-15), and review the folders once a year before deleting anything.

Keeping Receipts and Invoices in Billed

Billed's expense tracking page says: "Attach the receipt when you record the expense, and it stays with that entry in your Billed account instead of in a drawer or an inbox." It also says reports "can be filtered by date range and exported for your accountant, bookkeeper or tax software."

Billed's invoice software page says "Billed keeps invoicing, estimates, expenses, time tracking and reports in one account", and lists "Invoice Attachments": "Add files to your invoices and estimates."

Billed's expense tracking and invoice software pages describe receipts attached to expenses and files attached to invoices and estimates.

Related Guides

• How to delegate tasks effectively
• Expense tracking for small business
• What is bookkeeping?
• How to manage freelance finances
• Freelance taxes: the complete guide

FAQ

How should a small business structure its folders?

Pick one main folder structure, such as by area (Clients, Finance, Legal, Operations) or by client, use the same subfolders inside each, and keep it two or three levels deep. Name files with the date first so they sort in order.

How long should I keep business records in the US?

IRS Publication 583 (revised December 2024) says: "Generally, this means you must keep records that support an item of income or deduction on a return until the period of limitations for that return runs out." That's 3 years in the general case. It also says: "If you have employees, you must keep all employment tax records for at least 4 years after the date the tax becomes due or is paid, whichever is later." Ask your accountant what applies to you.

Can I keep business records electronically?

IRS Publication 583 (revised December 2024) says: "All requirements that apply to hard copy books and records also apply to electronic storage systems that maintain tax books and records." Ask your accountant before you destroy paper originals.

Can I store receipts in Billed?

Billed's expense tracking page says: "Attach the receipt when you record the expense, and it stays with that entry in your Billed account instead of in a drawer or an inbox."