Free Small Business Calculators
Fast browser-based math for pricing, late fees, advance deposits, remaining amounts, and sales tax — then create the matching paperwork in one click.
Pick The Number You Need To Work Out
Each calculator is a simple, free utility built for service business pricing decisions. Run the math here, then carry the result into the estimate, invoice, or receipt generator so the paperwork matches the price you quoted.
Profit Margin & Markup Calculator
Work out a suggested client price and estimated net profit from your cost and a target margin or markup percentage.
Late Payment Interest / Fee Calculator
Estimate overdue invoice interest from the principal amount, annual rate, and number of days overdue.
Deposit / Balance Due Calculator
Calculate received deposits, total paid, remaining balance, and any credit / overpayment balance before preparing invoices or receipts.
Advance Deposit Calculator
Calculate a requested upfront deposit by percentage or amount, separate any excess as a credit / overpayment balance, then copy simple estimate wording.
Sales Tax Calculator
Calculate tax from a known taxable amount and fixed discount before you build the invoice.
State Sales Tax Calculators
State pages preloaded with base rates: Texas · California · Florida · New York · Pennsylvania · Illinois · Ohio · Georgia · North Carolina · Washington.
How The Calculators Fit The Paperwork Flow
Price the job with the margin and markup calculator, plan requested advance-deposit wording with the advance deposit calculator before approval, send the estimate, track received deposits, remaining balances, and overpayment credits with the deposit / balance due calculator after payment, invoice with tax from the sales tax calculator, and — only if your terms allow it — apply the late fee calculator to overdue balances before sending a late payment reminder.
FAQ
Are the ClearPaperwork calculators free?
Yes. Every calculator runs free in your browser with no signup, and the numbers you enter are not sent to a ClearPaperwork server.
Can I move a calculator result onto my paperwork?
Yes. Work out the price, fee, deposit, or tax first, then open the matching generator. For estimates, use advance deposit results as terms wording. For invoices or receipts, enter actual paid amounts only after payment is received.
Do the calculators give legal or tax advice?
No. They are general math utilities. Late fee rules and sales tax rates vary by location, so verify the rules that apply to your business.