When you have a job, tax is invisible — it’s gone before your salary ever hits your account. When you work for yourself, the full amount lands in your hands, feels like yours, and then months later the tax authority reminds you that a good chunk of it never was. The freelancers who get wrecked by tax aren’t the ones who earned too little. They’re the ones who spent money that was never theirs to spend.
Here’s how to make sure that’s never you.
This is general guidance, not tax advice. Rates and rules vary by country and situation — check with a local accountant for your specifics.
Treat tax money as not yours
The core mental shift: when a client pays you $1,000, a portion of that is already spoken for. It’s the tax authority’s money, sitting temporarily in your account. If you internalise that, the whole problem becomes a storage question rather than a cash-flow shock.
Pick a percentage and be consistent
A common approach is to set aside somewhere between 25% and 35% of every payment for tax, depending on your income level and where you live. It’s better to over-save slightly and get a pleasant surprise than to under-save and scramble.
The important word is every. Not “at the end of the month if there’s some left” — every single payment, the moment it arrives.
Use a separate account
Willpower is not a tax strategy. The most reliable method is a dedicated savings account that you never touch. Money comes in, you immediately move your tax percentage across, and you mentally write it off. What’s left in your main account is genuinely yours to run the business and pay yourself.
Some people automate this with a rule that sweeps a percentage of every deposit into savings. If your bank can do it, use it.
Don’t forget you may owe throughout the year
In many countries the self-employed pay estimated tax quarterly, not just once a year. Missing those can mean penalties. If that applies to you, your set-aside account isn’t just for an annual bill — it’s funding four smaller payments. Either way, the habit is the same: save as you earn, and the deadlines take care of themselves.
Know your number as you go
The reason people under-save is that they don’t track income in real time, so they have no feel for the size of the eventual bill. If you can see your income accumulating month over month, your set-aside percentage stops being a guess — you can watch the tax pot grow alongside it and know you’re covered.
Where Billable comes in
Setting aside tax correctly depends on knowing what you’ve actually earned — not vaguely, but clearly. Billable gives solopreneurs a running view of income as it comes in: what’s been paid, what’s outstanding, and how the year is shaping up, all organised in one place.
That clarity turns tax from an annual ambush into a simple, ongoing calculation — you always know roughly what you owe because you always know what you’ve made. Every invoice and payment is tracked automatically, so when it’s time to hand figures to your accountant, they’re already in order. It’s $9 a month, flat. Keep your numbers ready.