How the monthly amount is found
The starting balance grows at the monthly rate. The rest of the goal is funded with equal monthly deposits that also earn interest. If the rate is 0, monthly = (goal − already saved) ÷ months.
This is an estimate. Real accounts skip months, change rates, and charge fees. It is not investment advice.
Common questions
What rate should I use?
A high-interest savings account rate, not a stock-market guess, if you need the money on a date.
What if I already have more than the goal?
The monthly amount is 0. You are there.