Freelance Cash Runway Calculator

Understanding the freelance cash runway — concept and principle

Runway is how long your savings will last if money keeps going out faster than it comes in. For a freelancer, quiet months are normal, so knowing your runway tells you how much time you have to find work, how big your emergency fund should be, and when to change course. This calculator divides your savings by your net monthly burn: costs minus the income you can count on in lean months. It works with any currency.

How it is calculated

• Net monthly burn = monthly costs − expected monthly income
• Runway (months) = savings ÷ net monthly burn

If expected income is equal to or higher than costs, there is no burn and the runway is unlimited.

Savings is the cash you can actually use, monthly costs include both personal living costs and business expenses, and expected income is a cautious figure for a slow month, not your average.

The principle

Runway is the same idea start-ups use for their cash: divide the money in the bank by the rate it is being spent. Only the shortfall drains savings, so the calculation uses costs minus income rather than total costs. It assumes the burn stays constant every month. In reality income is uneven, but planning on lean-month income gives a conservative answer that protects you if work dries up.

Worked example

1. Net burn = 3,200 − 1,000 = $2,200.00 a month.
2. Runway = 18,000 ÷ 2,200 ≈ 8.18, shown as 8.2 months.
3. With no income at all, the same savings would last 18,000 ÷ 3,200 ≈ 5.6 months.

How to read the result

Common personal-finance guidance suggests keeping several months of expenses as an emergency fund, and freelancers with irregular income often aim for more. As a practical rule, start looking for work or cutting costs well before the runway runs out, because invoices are often paid 30 days or more after the work is done. Every $100 cut from monthly costs here extends the runway by roughly 0.4 months.

Common mistakes

• Using average income instead of lean-month income.
• Leaving out yearly costs such as tax payments, insurance or software renewals; divide them by 12 and add them.
• Counting money set aside for taxes as available savings.
• Forgetting payment delays between finishing work and getting paid.

FAQ

Frequently asked questions

How many months of runway should a freelancer have?

There is no single rule. Many planners suggest at least three to six months of essential costs, and more if your work is seasonal or comes from a few large clients.

Does the calculator include interest on savings?

No. Over a few months it is usually small enough to ignore.

What is the fastest way to extend runway?

Cutting fixed costs and securing even small recurring income both reduce the burn, and lower burn extends runway faster than you might expect.

Sources: Consumer Financial Protection Bureau — An essential guide to building an emergency fund