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Toolzum

Profit & Loss Calculator

Compute profit and loss from revenue, costs, and expenses with margin percentages. Close the month knowing exact numbers — free, local, no signup.

100% Local Browser Native

How to Use the Profit & Loss Calculator

1. Enter revenue and costs

All three P&L layers.

2. Read profit and margins

Bottom line with percentages.

3. Rerun each period

Snapshots only — no history is stored.

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Frequently Asked Questions

What goes into P&L?

Revenue minus COGS is gross profit; minus operating expenses is net income plus margin percent. Three inputs only — no interest/tax layer, so adjust separately for lenders.

Profitable but cash-poor?

Common — unpaid invoices count as revenue before cash arrives. Track receivables aging alongside P&L, not instead of it.

Monthly or annual?

Monthly for operations, annual for strategy — same math, different decisions. Compare month-over-month trends, not single points.

Work a P&L example?

Revenue $100,000 minus $60,000 COGS minus $25,000 operating expenses leaves $15,000 net — a 15.0% margin. The tool splits gross profit from net income the same way.

Are figures uploaded?

No — math runs locally in your browser. Figures never leave your device.

Last updated October 2026