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A savings goal calculator determines how much you need to save each month (or how long it takes) to reach a target amount by a specific date, given your current savings and expected investment return.

단계별 가이드

  1. 1Future value of existing savings: FV = PV × (1 + r)^n
  2. 2Gap = Goal − FV of current savings
  3. 3Required monthly contribution = Gap × r / ((1+r)^n − 1) × 1/(1+r)
  4. 4Higher return rates or longer timelines dramatically reduce required monthly contributions

풀어진 예시

입력
Goal: $20,000 in 3 years, $2,000 saved, 5% return
결과
Save ~$463/month
Current savings grow to $2,315
입력
Goal: $100,000 in 10 years, $0 saved, 7% return
결과
Save ~$576/month
Compound growth does the heavy lifting

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