How to use this calculator
Type your start balance, the monthly % you want to test, how many months, and how much you add each month. The calculator grows the balance by your % each month, then adds your monthly add. Change one box at a time to see which number moves the result most.
Want to test a bad month too? Type a smaller % and compare. Real accounts go up and down, so think of this as a math helper, not a plan.
What is forex compounding?
Compounding means each month's growth is added to your balance, so the next month grows from a bigger number. This calculator shows that math using the monthly % you type in.
What monthly % should I type?
We don't suggest a number. Type any % you want to test, including small or negative ones. Real trading results vary month to month and can be losses.
Does the monthly add change much?
Often yes. Adding money each month raises the balance that compounding works on. Try a few amounts to see the difference with your own numbers.
Is this a forecast of my returns?
No. It is plain math on your inputs. Trading has risk, results vary, and past results never promise future ones.
Does this calculator save my numbers?
No. Everything runs in your browser and nothing you type is sent anywhere.
More free tools: quit your job calculator, forex compounding calculator, lot size calculator, passive income goal calculator. New to the words? See the glossary.