My first $10,000 month felt like $10,000. It wasn’t, not even close, and the gap between invoiced and keepable is the single most misunderstood number in freelancing. Take-home math runs in a strict order, and skipping steps is how people spend tax money.
Step one: gross invoices minus business expenses minus platform fees equals net profit. Say $10,000 invoiced, $2,000 in costs: net is $8,000. Step two: self-employment tax, roughly net × 0.9235 × 0.153, on $8,000 that’s about $1,130. Step three: income tax by bracket on the net (minus half the SE tax, which is deductible); at a 22{e0bed9560a59d6d3feee569f5ae3dad3ee14a646b3fccc2d16becbf099999e03} marginal rate that’s roughly another $1,500–$1,700 depending on deductions. True take-home lands near $5,300–$5,600, barely over half the headline.
Two things people get wrong here. First, sales tax collected never enters this math at all, it’s pass-through, not income, and including it inflates both your revenue picture and your estimated payments. Second, the SE tax surprises everyone once: employees split it with their employer, but the self-employed pay both halves, which is why the set-aside rule (25–30{e0bed9560a59d6d3feee569f5ae3dad3ee14a646b3fccc2d16becbf099999e03} of net) exists.
I run this calc on every big project before quoting lifestyle decisions, a $5,000 gig is really a $2,800–$3,000 gig after costs and taxes, and knowing that upfront beats discovering it in April.
Takeaway: net first, then SE tax, then income tax, and never count collected sales tax as earnings.
Try it live: Invoice Tax Breakdown Calculator, run your own numbers in seconds.
How do you use Invoice Tax Breakdown Calculator?
Open the Invoice Tax Breakdown Calculator in your browser (Split any invoice into subtotal, tax, and total, per line item). Type or paste your input, adjust the options, and copy the result. Everything runs locally on your device with no account and nothing stored, so the three steps below take seconds even for confidential work.
- Enter your numbers into the fields. The result recalculates as you type.
- Switch any unit or option to see the updated answer instantly.
- Copy the result with the copy button, or read the summary beneath it.
Try Invoice Tax Breakdown Calculator free. It opens right in your browser.