Profit sharing calculator (proportional split)
Split a profit (or cost) among partners in proportion to what each invested.
Each partner gets the same proportion as their investment.
How the calculation works
The partnership rule splits a profit (or loss) among partners in proportion to what each invested — put in more, get more. It's a direct application of proportionality.
partner's share = (their investment ÷ total invested) × amount to split
Step-by-step example
Ana invested R$30k and Bruno R$20k (total R$50k). Profit of R$10k:
- Ana: (30 ÷ 50) × 10,000 = R$6,000 (60%)
- Bruno: (20 ÷ 50) × 10,000 = R$4,000 (40%)
Different time periods
When partners contribute capital for different lengths of time, weight by capital × time. For simultaneous contributions, capital proportion is enough.
Examples
- Three partners with R$10k, R$20k, R$20k splitting R$5,000: R$1,000 / R$2,000 / R$2,000.
- Works the same to split a cost: same proportion as the investment.
Frequently asked questions
Can it split costs too?
Yes — same proportion, whether profit or cost.
What if a partner worked more?
The classic rule splits by capital only. Labor is usually paid separately before splitting profit — set it in the partnership agreement.
How to split with different entry dates?
Weight by capital × time: multiply each investment by its months and use that proportion.
Why does investment duration matter?
Because earlier capital carried risk for longer. Multiply each partner's capital by the months invested.
What about the partner who works in the business?
The rule splits capital, not labour. Work is usually paid through a salary before profit is divided.
Are losses split the same way?
Unless the contract says otherwise, yes. It is worth stating explicitly.
Is a 50/50 partnership a good idea?
Without a tie-break clause it is the setup most likely to deadlock a company.
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Updated on June 18, 2026 · by Rafael Rossi · Methodology & sources