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The standard advice says to keep three to six months of expenses in cash. That rule was built for a salaried worker whose main risk is losing the job. If you freelance, your risk looks different. You rarely lose everything at once. Instead you get a slow quarter, a client who pays sixty days late, and a December where nobody signs anything.
So instead of picking a number of months out of the air, size the fund from your own history.
Start with the floor, not the average
Averages hide the months that hurt. Take the last twelve months of income that actually arrived in your account (not invoiced, received) and line them up.
Here is a fictional designer, Lena, whose core monthly costs are $3,200: rent, food, utilities, insurance, minimum debt payments and her tax set-aside.
| Month | Received | Gap vs $3,200 |
|---|---|---|
| Jan | $1,900 | −$1,300 |
| Feb | $2,400 | −$800 |
| Mar | $5,600 | +$2,400 |
| Apr | $4,100 | +$900 |
| May | $3,000 | −$200 |
| Jun | $6,200 | +$3,000 |
| Jul | $2,100 | −$1,100 |
| Aug | $1,500 | −$1,700 |
| Sep | $4,800 | +$1,600 |
| Oct | $5,200 | +$2,000 |
| Nov | $3,900 | +$700 |
| Dec | $1,800 | −$1,400 |
Her average is about $3,540 a month, comfortably above costs. On paper she is fine. In practice, the July-to-August stretch left her $2,800 short in two months, and the December-to-February run was $3,500 short across three.
The two-part buffer
For irregular income, I find it helps to split the fund into two pots with different jobs.
- The smoothing pot. Covers the worst run of consecutive short months from the last year or two. For Lena that is $3,500. This money gets used and refilled several times a year. It is a shock absorber, not a savings goal.
- The true emergency pot. Covers the things that also hit salaried people: illness, a broken laptop, a family emergency. Three months of core costs is a sensible starting point, so $9,600.
Together that is $13,100. That figure is larger than three months but more honest about how her year actually behaves.
What if you have less than a year of history?
Use a stress test instead. Assume your two biggest clients both pause for three months at the same time. Work out how much income disappears and how much remains from smaller clients. The shortfall over those three months is your smoothing target. It will feel pessimistic. That is the point.
Building it without stalling everything else
A $13,000 target can feel impossible if you are starting at zero. Fill it in order:
- First $1,000 in the true emergency pot, so a single repair does not go on a card.
- Then the smoothing pot, because you will use it this year.
- Then the rest of the emergency pot, at a pace that still lets you pay down expensive debt.
Review it twice a year
Your floor moves. A new retainer client raises it; losing one lowers it. Every six months, pull the last twelve months of receipts, redo the table and adjust the targets. It takes twenty minutes, and it is the closest thing a freelancer gets to job security.