Free Revenue Forecast Calculator
Where does the business land if growth holds? Current monthly revenue plus a growth rate, compounded month by month - milestone figures, the period total, and a nudge toward the three-scenario habit that keeps forecasts honest. Free, no sign-up.
Tip: run it three times - a conservative, an expected, and an optimistic growth rate - and plan costs against the conservative one.
100% free and private - everything is calculated in your browser. Nothing is uploaded unless you ask us to email your result, and even then we keep only your email address.
Was this tool helpful?
Rate it and tell us what you'd like it to do - we read every note.
Anonymous - no account or email needed.
A forecast is a compounding assumption
Start at 1,000,000 a month. At 2% monthly growth you end the year at about 1,270,000 a month; at 5%, about 1,800,000; at 10%, about 3,140,000. Same business, same starting point - the only difference is a number you chose. That's why the growth rate deserves more scrutiny than any other cell in your plan.
The discipline that survives contact with reality: derive the rate from your last 6-12 months of actuals, run conservative, expected, and optimistic versions, and commit fixed costs only against the conservative one. Optimism is a target, not a budget.
Revenue Forecast FAQ
How do I forecast revenue?
The simplest sound method: take your current monthly revenue and compound a realistic monthly growth rate forward - month k = current x (1 + growth)^k. This calculator does that and totals the period. More sophisticated methods layer in seasonality and pipeline data, but this compounding baseline is where every forecast starts.
What growth rate should I use?
Your own history, not your ambition. Look at the last 6-12 months of actual revenue and compute the average month-over-month change - that's your evidence-based starting point. If you have a concrete reason growth will accelerate (a new product, a new channel), model it as a separate optimistic scenario rather than baking hope into the base case.
Why do small rate differences change the forecast so much?
Compounding. At 2% monthly growth, revenue is 1.27x in a year; at 5% it's 1.80x; at 10% it's 3.14x. The gap between guessing 5% and achieving 2% is nearly a third of your forecast - which is why costs should be planned against the conservative scenario, not the exciting one.
How do I handle seasonality?
A flat growth rate smooths over it - fine for a rough annual total, misleading for month-by-month planning if December is triple February. For seasonal businesses, forecast each month against the same month last year instead, and use this calculator for the trend on top.
Should I forecast one number or several scenarios?
Three: conservative, expected, optimistic. Run the calculator with each rate. Plan fixed costs against the conservative case (survival doesn't depend on optimism), set targets against the expected case, and treat the optimistic case as the trigger for hiring or stock decisions - not the assumption behind them.
How is this different from a Growpins Ledger account?
A forecast is only as good as the baseline. A free Growpins Ledger account gives you the actual monthly revenue trend from your invoices - so the growth rate you feed this calculator comes from your real trajectory, not a guess at it.
Guessing your growth rate?
A free Growpins Ledger account shows your actual monthly revenue trend from real invoices - so the rate behind your forecast is your trajectory, not your hope. Built by the team behind Growpins, founded by Dokun Bamigboye.
Forecast from facts - sign up freeChecking the cost side too? Pair this with the Break-Even Calculator, or browse all free tools.