Savings goal
Find the monthly deposit needed to reach a target balance under your entered assumptions. Drag the graph handles to change inputs and explore the result.
Your inputs
The editable example is illustrative. Enter your own dimensions, operating data, prices, and fees. Results update as you edit.
Calculations run in your browser. Inputs are not saved or sent to analytics.
How it works
- r = ÷ 1,200; A = ((1+r)^ − 1) ÷ r; r=0: A=; Start of period: A′=A×(1+r); D=max(0, ( − ×(1+r)^) ÷ A)
- Worked example: (2,200 − 1,000) ÷ 12 = 100 (r=0)
- Supported input limits: : 0 ≤ x ≤ 1,000,000,000,000; : 0 ≤ x ≤ 1,000,000,000,000; : 0 ≤ x ≤ 1,000; : 1 ≤ x ≤ 1,200
Input and formula key
Your result
Complete the inputs to see your result.
Assumptions and limitations
Monthly deposits and a constant annual rate divided by 12 are assumed. Beginning-of-month deposits earn one extra month of interest. A zero required deposit means the current balance’s projected growth already covers the target; returns are not guaranteed.
Sources
- Investor.gov — compound interest calculator Sources reviewed: 2026-10-06
- Investor.gov — savings goal calculator Sources reviewed: 2026-10-06
- CFPB — compound interest Sources reviewed: 2026-10-06
