How this calculator works
First the calculator grows your current savings at the interest rate for the whole period. The gap between that amount and your goal is what monthly deposits must cover. Here r is the annual rate divided by 12 and n is the number of months.
Interest rates change, so run the numbers again if your account’s rate moves.
Worked example
Using sample inputs for a $20,000 goal with $2,000 already saved, earning 4.5% over 5 years:
Common questions
Which interest rate should I enter?
Use the rate your savings account actually pays. If you are unsure, enter 0 for a simple, conservative answer.
How big should an emergency fund be?
A common guideline is three to six months of essential expenses, though the right amount depends on your job security and responsibilities.
What if I cannot afford the monthly amount?
Try a longer timeline, a lower goal, or a mix of both. The calculator makes it easy to test each option.