Setting aside money for taxes

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Nobody withholds tax from your invoices. That single fact is why so many freelancers meet April with a number they cannot pay. The fix is not a clever spreadsheet — it is a boring savings account and a rhythm you never re-litigate.

Separate the tax money physically

A tax "set-aside" that lives in your checking account is not a set-aside. It is money you will spend, because it looks exactly like available cash. The single highest-leverage habit is to move the tax share to an account you do not monitor day to day — a high-yield savings account is ideal, because the balance at least earns a little while it waits.

The calculator turns your estimated annual tax into a per-month or per-week number so the decision is made once. But the account separation is what makes the number stick.

Pick the share, then stop thinking about it

A common starting point is 25%–30% of every freelance payment, which covers combined self-employment and federal income tax at moderate incomes. Use your effective tax rate plus your state rate as the precise target. Above roughly $150,000 of profit you will want more; with large deductions, a retirement contribution, or a spouse with W-2 withholding, you may need less.

The exact percentage matters less than the consistency. Saving a smaller amount on a reliable schedule beats saving a large amount whenever you remember, because the reliable version survives a slow month. Automate the transfer on every payment if you can.

Percentage, not a fixed dollar amount

If your income is uneven, save a percentage of each payment rather than a flat sum. A $2,000 project sets aside $500 at a 25% share; a $200 tweak sets aside $50. The bucket grows in proportion to what arrived, so a lean month automatically demands less and you are never tempted to skip the transfer.

This is also why the bucket approach is more forgiving than the official quarterly due dates. Those dates (April 15, June 15, September 15, January 15) expect you to have the cash on the day. If you have been parking a share all along, the cash is simply there.

When a single project dominates the year

Freelancers with one large engagement face a timing problem: the IRS expects payment roughly as income arrives, but a lump in June can make April's instalments look absurdly small. The annualised income method on Form 2210, Schedule AI, lets you match estimated-tax payments to when the money actually came in, which can erase a penalty that would otherwise apply.

The quarterly tax calculator sizes the safe-harbour target and the rough penalty so you can see the exposure. The bucket still funds it; the annualised method just changes when each chunk is due.

What if you already have some saved?

Count what is already in the tax account as "already set aside" and only schedule the remaining balance. The tax set-aside calculator does exactly this: enter the current balance and it spreads only what is left across the months before the April 15 deadline, so you are not double-saving.

State tax is a second bucket

Federal and state estimated tax are separate. Many states mirror the federal schedule and thresholds; some have their own forms. Treat the state share as an additional set-aside on top of the federal figure — often another 5%–10% depending on where you live. If your state has no income tax, you can skip this part entirely.

The mindset that prevents the surprise

Reframe the tax share as money you have already spent. The invoice was never $5,000 of yours; it was $5,000 of which $1,250 (at 25%) was always the government's. Moving it out on receipt is not a loss, it is honesty about who the money belonged to. Freelancers who internalise this stop feeling the April payment as a hit and start seeing the remaining balance as the only true income.