The general rule is simple. If you want to deduct it, you need a record proving you paid for it and that it was a business expense. For a residential cleaning business, that means several specific categories of documentation.

Supplies and equipment are your most frequent purchases. Every bottle of cleaning solution, pack of microfiber cloths, vacuum, mop, and pair of gloves should have a receipt tied to it. Take photos of receipts with your phone on the spot because paper receipts from stores fade fast, especially thermal paper from big box retailers. Organize them by month in a cloud folder or use a receipt scanning app that feeds into your accounting software.

Mileage is one of the biggest deductions cleaning businesses miss or fail to document properly. Driving between client homes is deductible, and those miles add up quickly when you’re hitting four or five houses a day across the Phoenix metro. Use a GPS tracking app like MileIQ or keep a written log with the date, starting odometer, ending odometer, and the business purpose of each trip. The IRS will not accept a rough estimate at the end of the year. You need contemporaneous records, meaning you tracked it as it happened.

Payroll records need to be retained for at least four years. That includes timesheets, pay stubs, W-4 forms, tax deposit confirmations, quarterly filings, and year-end W-2s. If you use independent contractors, keep their W-9s and the 1099s you issue. Misclassifying employees as contractors is a common problem in the cleaning industry, so having solid documentation of the working relationship matters.

Insurance policies are both a business expense and a protection record. Keep copies of your general liability, workers’ comp, and any bonding policies. These premiums are deductible and you may need to show proof of coverage for commercial clients or property managers.

Bank and credit card statements serve as backup documentation for everything. Even if you lose a receipt, a bank statement showing a purchase at a janitorial supply store on a specific date gives you something to work with. This is one reason why keeping business and personal finances completely separate is so important. A dedicated business account makes every transaction traceable.

Client contracts and service agreements should be saved even after the work is done. They document the business relationship and support the income side of your books. If you offer recurring service at a set rate, keep that agreement on file.

Home office deductions apply if you have a dedicated space in your home where you handle scheduling, billing, and admin work. The space has to be used exclusively for business. Track your mortgage or rent, utilities, and internet costs so you can calculate the deductible portion based on square footage.

Keeping all of this organized throughout the year is much easier than scrambling at tax time. Professional small business bookkeeping services can set up a system that captures everything as it happens so nothing falls through the cracks when it’s time to file.