Contractor tax reserve: plan from profit, not deposits
Contractor tax planning gets clearer when you estimate from business profit after ordinary expenses, not from every dollar deposited.
Back to all briefsA rough tax reserve should start with net profit. Revenue that will be spent on delivery costs should not be treated like take-home income.
Separate revenue from profit
Deposits can feel like income, but materials, subcontractors, software, equipment, mileage, and other business expenses may reduce taxable profit.
Keep self-employment tax visible
Contractors often need to consider both income tax and self-employment tax. A single flat percentage can hide why the reserve feels high.
Confirm deadlines and safe-harbor rules
Quarterly payment timing, deductions, credits, spouse income, and prior-year safe-harbor rules can change the actual payment plan.
Related business checks
Taxes / August 1, 2026Sales tax nexus: check the trigger before quoting out-of-state workCustomer location, filing thresholds, and delivery rules can change whether tax is due at all. Confirm the trigger before copying a total into the quote.Taxes / July 22, 2026Exempt customer note: confirm before removing sales taxA customer saying they are exempt is not the same as having usable records. Check the certificate, line items, and invoice note before zeroing tax.Taxes / July 19, 2026Slow-month tax reserve: reset the estimate before a quarterly paymentA slow month can change cash planning, but it should not erase prior tax exposure. Recheck profit and prior payments before lowering the reserve.