Most freelancers run their finances on whatever is left over: income comes in, bills get paid, and profit — if there's any — is whatever happens to survive the month. The Profit First method flips that order. You decide up front what percentage of every dollar goes to profit, to your own pay, and to taxes, move that money out of reach immediately, and force your operating expenses to live on whatever remains. This calculator does the split for you, using your own income and percentages instead of someone else's rule of thumb.
How it works
You enter your monthly income and three allocation percentages: how much goes to profit, how much becomes your owner pay, and how much gets set aside for taxes. The calculator multiplies your income by each percentage to get that bucket's dollar amount, then whatever is left after profit, owner pay, and tax — is your operating expenses bucket, the money available to actually run the business: software, contractors, ads, tools, rent.
The three percentages can't add up to more than 100 — if they did, there would be nothing left for operating expenses and the math would go negative, which isn't a real allocation. Each bucket amount is rounded to the cent independently, and operating expenses is calculated as whatever remains after subtracting the other three rounded buckets from your income, so the four numbers always add back up to your monthly income exactly.
The order matters more than the percentages themselves. Profit and owner pay come out first, before expenses get a say — the discipline is in removing that money from the account you pay bills from, ideally into a separate account entirely, so it's genuinely unavailable rather than just mentally earmarked.
Worked example
Say your monthly income is $6,000, and you're using the default allocation of 5% profit, 50% owner pay, and 30% tax.
- Profit bucket: $6,000 × 5% = $300
- Owner pay: $6,000 × 50% = $3,000
- Tax bucket: $6,000 × 30% = $1,800
- Operating expenses: $6,000 − $300 − $3,000 − $1,800 = $900
That $900 is what's left to actually run the business on this month — software subscriptions, a contractor, ad spend, tools. If your real operating costs are consistently higher than that, it's a signal to raise rates or cut costs, not to quietly shrink the tax or profit buckets to make the number work.
How to interpret your result
Owner pay is what you draw as your own paycheck — moved to a personal account, not left sitting in the business. The tax bucket should get parked in a separate account you don't touch until a quarterly payment is due; if you're not confident 30% is the right number for your situation, run the Tax Set-Aside Calculator, which computes a set-aside percentage from your actual expected profit and income-tax rate rather than a flat guess, and plug that percentage in here instead.
The profit bucket is meant to be a real, separate account you don't dip into for expenses — even a modest 5% adds up over a year, and the discipline of never touching it is the point, not the size of any single month's contribution. Traditionally it gets distributed to yourself as a bonus on a quarterly cadence, on top of your regular owner pay.
If operating expenses comes out too thin to cover your real bills, resist the urge to fix it by shaving the tax bucket — that just trades a cash-flow problem today for a tax bill you can't cover later. Lower the profit or owner-pay percentage temporarily instead, or address the underlying issue: rates too low, expenses too high, or income too inconsistent.
Methodology & sources
The formula is: profit = monthlyIncome × profitPercent / 100, ownerPay = monthlyIncome × ownerPayPercent / 100, tax = monthlyIncome × taxPercent / 100, and operatingExpenses = monthlyIncome − profit − ownerPay − tax, with every bucket rounded to the cent. The three percentages are capped so their sum can't exceed 100 — beyond that point there is nothing left to allocate to operating expenses.
This is the core percentage-allocation mechanic from Mike Michalowicz's Profit First system, adapted here to a single monthly snapshot rather than the full multi-account, bi-monthly cadence the book describes. The book recommends starting with modest percentages — a few percent to profit for most small businesses — and adjusting them gradually over quarterly reviews as your real expense base becomes clearer, rather than picking aggressive numbers on day one and finding operating expenses can't sustain them.