Savings Goal Calculator
Find out how many months it will take to reach your savings target with your regular monthly contributions and interest.
Your Savings Target
Your Savings Plan
Time to Goal
6y 5mo
Goal: $50,000
How It Works
The savings goal calculator solves for time using the future value of a series formula in reverse. Given your goal amount, current balance, monthly contribution, and interest rate, it calculates exactly how many months it will take to reach your target.
The formula used is: months = log(1 + (needed × r / PMT)) / log(1 + r), where r is the monthly interest rate and PMT is your monthly contribution.
Adjust the monthly contribution slider to see how saving more each month dramatically shortens your timeline.
Worked example: to reach a $20,000 goal starting from $5,000, saving $400 per month at 4% APY, the formula solves to about 34 months — just under three years. Without any interest it would take 37.5 months, so at short horizons the contribution rate matters far more than the interest rate.
Frequently Asked Questions
Written by the Tools & Deals Hub Editorial Team · Reviewed by Durga Prasad Mogulothu, Founder · Last reviewed:
Sources & further reading
- CFPB — Consumer tools (loans, mortgages, savings)
- Investor.gov — Free financial calculators (U.S. SEC)
Results are estimates for planning, not professional advice. Figures can change after publication — check the source for current numbers.