Free tools

The numbers freelancers
never get told

Nobody hands you a payslip when you work for yourself. These are the four calculations that replace it — the same arithmetic Runway runs internally, given away with no account and nothing stored.

How long will your money last?

Your runway is the number of months you can cover your costs if no new work arrives. It is the single most useful number a freelancer can know, and almost nobody knows it.

Open the runway calculator

What do you owe in self-employment tax?

Schedule SE is the bill that catches out first-year freelancers: 15.3% on top of income tax, due whether or not you set anything aside.

Open the self-employment tax

What should you actually charge?

Most freelancers price off their old salary and quietly lose money. Your rate has to cover time you cannot bill, costs an employer used to absorb, and both halves of payroll tax.

Open the rate calculator

What did that project really pay?

The rate you quoted and the rate you earned are different numbers. The gap is admin, revisions and the scope that crept in for free.

Open the effective hourly rate

Four calculators, or one that never stops running

Every number on this page goes stale the moment you close the tab. Runway keeps them live off your real invoices, clients and expenses — free, forever, with no bank connection.

Start free — no card