Savings Goal Calculator: how much to save monthly

This calculator determines how much you need to save each month to reach a specific financial goal within a given timeframe, considering an annual rate of return.

Savings goal formula

The required monthly payment is computed as:

PMT = FV × r / ((1+r)ⁿ − 1)

Where FV is the future value (savings goal), r is the monthly rate of return and n is the total number of months. This formula assumes regular deposits at the end of each period.

Example 1: emergency fund

Problem: Save $10,000 in 2 years with 3% annual return.

1. Data:
   • FV = 10,000; r = 0.03/12 = 0.0025; n = 24.
2. Monthly payment:
   • PMT = 10,000 × 0.0025 / ((1.0025)²⁴ − 1) ≈ $405.34.

Answer: You need to save approximately $405.34 per month.

Example 2: car savings

Problem: Save $25,000 in 4 years with 5% annual return.

1. Data:
   • FV = 25,000; r = 0.05/12 ≈ 0.004167; n = 48.
2. Monthly payment:
   • PMT ≈ $471.13.

Answer: You need to save approximately $471.13 per month.

Usos comuns

• Planning savings for major purchases (car, house, travel).
• Setting realistic emergency fund goals.
• Computing how much to save for children's education.
• Planning supplemental retirement savings.
• Evaluating whether a savings goal is achievable with your budget.
• Comparing different timeframes and rates of return.

Common mistakes in savings planning

• Overestimating the expected rate of return.
• Not considering inflation that reduces purchasing power.
• Not having an emergency fund before saving for other goals.
• Interrupting savings for unexpected expenses without planning.

Dica profissional

Automate your savings by setting up automatic transfers on payday. "Pay yourself first" before spending on non-essentials. Even small amounts consistently grow into significant results thanks to compound interest.