Estimate an income buffer for sick days as a freelancer

No Work, No Pay: The Freelancer's Risk

Unlike employees, freelancers receive no sick pay. A week of illness doesn't just cost health — it costs income, often while medical expenses increase simultaneously. Without a dedicated sick day fund, illness can rapidly deplete savings or force debt.

Building Your Safety Net

Financial advisors recommend freelancers maintain a dedicated illness and incapacity fund separate from their general emergency fund, sized to cover 4–12 weeks of living expenses plus typical medical costs.

What People Often Overlook

Many people find that medical costs are the easier number to estimate — it's the lost income that catches them off guard. Think about it: if you had a fortnight of flu, how many client projects would slip? How many invoices would go unsent? It can help to track your average earning days per month before running any estimates, just so the numbers feel grounded in reality rather than optimism. One approach is to also factor in any recovery time after a serious illness, not just the days spent in bed.

A Fund That Works Quietly in the Background

This is worth considering as a long-term habit rather than a one-off task. Many freelancers set aside a small percentage of each invoice specifically for this purpose. Over time, those contributions build quietly into a meaningful cushion. The goal is simply to reduce the financial sting of being human — because everyone gets ill eventually.

Run it with sensible defaults

Using average daily earnings of 300, expected sick days per year of 10, estimated annual medical costs of 500, weeks of cover to build of 8, the calculation works out to 12,500.00. Nudge the inputs toward your own situation and the output recalculates instantly. The defaults are meant as a starting point, not a recommendation.

The levers in this calculation

The inputs — Average Daily Earnings, Expected Sick Days per Year, Estimated Annual Medical Costs, and Weeks of Cover to Build — do not pull with equal force. Not every input has equal weight. Flip one at a time toward extreme values to feel which ones move the needle most for your situation.

How the math works

This calculator estimates financial outcomes for freelancers and remote workers based on the inputs provided. Results are illustrative projections and may vary based on location, tax jurisdiction, and individual circumstances. This tool does not provide tax, legal, or financial advice. The working is transparent — you can verify every step yourself in the formula section below. No black box, no opaque "proprietary model".

Why freelancers need this

Without a fixed salary, pricing decisions compound. A rate set too low today sets the ceiling for the next few years of clients. The calculation here makes the lifetime cost of underpricing visible — which usually changes the conversation with the next client.

What this doesn't capture

Freelance income is lumpy. The calculation assumes steady work; reality includes dry spells, delayed invoices, and client churn. Plan against a pessimistic version of the result, not the central case.