Numerandi
Small tools that do one job well
The name comes from ars numerandi, Latin for “the art of counting” and the title of a 15th-century arithmetic treatise. Here, that means calm, focused answers with the working left visible. Read about Numerandi for who runs the site, how the calculators are maintained, and what they do not decide.
These calculators cover freelance tax, pricing, and cash flow. The payroll tax for freelancers is on the self-employment tax calculator. Federal installment timing is on thequarterly estimated tax calculator. Entity payroll tax is on theLLC vs S-corp tax calculator. A sustainable price starts with thefreelance hourly rate calculatorand how much to charge or raise as a freelancer.
Longer explanations sit next to the math:whether 1099 or W-2 is better,whether freelancers pay quarterly taxes,what happens if you miss a quarterly tax payment,work from home write offs for freelancers,whether the IRS mileage rate changed for 2026, and graphic designer hourly rates. The full list is on All tools.
Start with the decision you need to make
All freelance finance calculators
- 1099 vs W-2 Calculator 2026: Contractor Take-Home
2026 1099 vs W-2 calculator. Compare contractor vs employee take-home after SE tax and benefits, then see which path nets more. - Fiverr and Upwork Fee Calculator
Fiverr and Upwork fee calculator: see platform fee, net after fees, and keep rate on one payment. Direct and custom marketplace percents included. - Freelance Hourly Rate Calculator: How Much to Charge
Calculate how much to charge as a freelancer from take-home, billable hours, expenses, a tax reserve, and vacation. Instant hourly and day rate. - Freelance Project Pricing Calculator: Quote or Estimate
Turn hours × your hourly rate into a freelance project quote. Add expenses, uncertainty, and a true profit margin. Instant estimate. No signup. - Freelance Runway Calculator: How Long Cash Lasts
See how many months your cash lasts after burn and protected tax money. The freelance runway and emergency-fund calculator. Instant. - Home Office Deduction Calculator 2026: $5/sq ft
2026 simplified rate $5/sq ft, cap $1,500. See which method wins. - Invoice Late Fee Calculator: Overdue Invoice Charge
Invoice late fee calculator for an overdue invoice. See the fee amount, new total, and cost of delay from simple annual interest or a one-time flat fee. - LLC vs S-Corp Tax Calculator 2026
2026 LLC vs S-corp tax calculator. On $120,000 of profit, the S-corp path pays $3,245.46 less after a $70,000 salary and $3,000 of costs. - Mileage vs Actual Expense Calculator 2026
2026 mileage vs actual expense calculator. Compare IRS standard mileage with actual costs and see which method wins, and by how many dollars. - Profit First Calculator: Allocation Percentages
5% / 50% / 15% / 30% under $250,000. Full Profit First allocation percentages by revenue tier, with a calculator for the dollar split. - QBI Deduction Calculator 2026: 20% QBI Deduction
QBI deduction calculator 2026: a 20% QBI deduction. $100,000 of QBI is a $20,000 deduction. Enter your own QBI. - Quarterly Estimated Tax Calculator 2026
See what to pay each 2026 Form 1040-ES deadline. The loaded safe-harbor example is $3,179.15. Not a full income-tax bill. - Self-Employment Tax Calculator 2026: 15.3%
12.4% Social Security + 2.9% Medicare (15.3% SE rate). $80,000 example is $11,303.64, not income tax. - Solo 401(k) vs SEP Calculator 2026: Contribution Limits
2026 Solo 401(k) vs SEP calculator. Compare contribution limits from the same Schedule C profit and see which plan lets you put more away.