Large client payments: set the tax reserve before spending
A large invoice payment can feel like profit, but it may still need to cover expenses, tax reserves, and pass-through amounts. Split the cash before using it.
Treat a large payment as cash to allocate, not automatic take-home income. Before moving money out of the business, separate direct costs, sales tax or client pass-through amounts, processor fees, and a rough contractor tax reserve from the profit you expect to keep.
Start with the invoice story
Match the payment to the invoice, deposit, or milestone it belongs to. Identify the service subtotal, collected sales tax, reimbursed costs, retainers for future work, and any amount that is not owner income.
Estimate profit before the reserve
Subtract materials, subcontractors, software, mileage, processor fees, and other direct costs before choosing a tax reserve. The profit number is a better planning base than the full deposit that landed in the bank.
Move cash into practical buckets
Separate operating cash, tax reserve, and owner pay before spending the payment. Confirm current IRS, state, local, and professional guidance before relying on estimated tax amounts or payment timing.