# Sales Forecasting: Project Future Revenue from a Growth Rate

> A simple compounding forecast turns your current revenue and growth rate into a forward plan. Here's how it works and how to use it without fooling yourself.

- URL: https://www.pyalm.com/blog/sales-forecasting-guide
- Author: Fadhil Abdulla
- Category: Free Tools
- Published: 2026-06-15
- Updated: 2026-06-15

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## Why forecast at all

A sales forecast turns assumptions into a plan you can budget, hire, and stock against. Even a simple model beats flying blind. The free [Sales Forecast Calculator](https://www.pyalm.com/free-tools/sales-forecast-calculator) projects revenue from your current run-rate and a monthly growth rate.

## How the model works

It compounds your current monthly revenue by the growth rate each month. After N months, revenue = current × (1 + growth%) raised to N, and the total is the sum of every month along the way. Starting at AED 100,000 with 8% monthly growth, month 12 reaches roughly AED 252,000.

## Use ranges, not single numbers

Run an optimistic, a base, and a conservative growth rate to get a range. Reality rarely follows one smooth curve, so plan for the conservative case and treat the optimistic one as upside.

## Forecasts need a feedback loop

A forecast is only useful if you compare it to actuals and adjust. Keep real revenue current in [Pyalm Books](https://www.pyalm.com/books), and pair the forecast with your [runway](https://www.pyalm.com/free-tools/startup-runway-calculator) and [break-even](https://www.pyalm.com/free-tools/break-even-calculator) numbers.

[Use the free Sales Forecast Calculator](https://www.pyalm.com/free-tools/sales-forecast-calculator) | [Break-even Calculator](https://www.pyalm.com/free-tools/break-even-calculator)