Savings Interest Calculator

Calculate the maturity amount of a regular savings plan from monthly deposit, rate, term, and tax.

Note: A financial reference calculation. The actual maturity amount varies by product terms, deposit dates, preferential rates, taxation, and early-withdrawal conditions.

Category: Calculators

When to use?

Use it to compare recurring-savings products, or to preview the maturity amount by monthly deposit and rate when planning savings.

How to use

  • Enter the monthly deposit.
  • Enter the annual rate (%) and term (months).
  • Check the interest tax rate (default 15.4%).
  • Total principal, after-tax interest, and the maturity amount are calculated.

Input Explanation

Enter the monthly deposit, the annual savings rate, and the term (months).

Calculation Basis

Each monthly deposit earns interest for its remaining months. Total interest = sum of each deposit × rate × remaining months ÷ 12.

Usage Examples

  • Compare savings plans - Vary the monthly deposit and rate to check maturity amounts.
  • Set a savings target - Gauge the monthly deposit needed to reach a target maturity amount.
  • Compare with a deposit - Compare splitting the same amount across monthly savings vs. a single deposit.

Examples

  • 500,000/month, 4%/yr, 12 months, 15.4% tax → principal 6,000,000, after-tax interest ~110,000, maturity ~6,110,000
  • 300,000/month, 3.5%/yr, 24 months, 15.4% tax → principal 7,200,000, maturity ~7,420,000

Cautions

  • A simple-interest estimate; preferential-rate conditions, tax-free products, missed payments, and early withdrawal change the actual amount. Check the product terms before signing up.
  • This is a simple estimate from your inputs and a general formula; verify officially before any real or commercial use.

Guides

Savings interest calculation

A simple model where each monthly deposit earns interest for its remaining term. Actual interest varies with deposit dates and product terms.

Deposit vs. savings

A lump-sum deposit and a monthly savings plan compute interest differently even at the same rate.

FAQ

How is it calculated?

A simple savings calculation where each monthly deposit earns interest for its remaining months.

Why is savings interest less than a deposit?

Savings are paid in monthly, so only early deposits earn interest for the full term while later deposits earn it briefly.

Is tax reflected?

Yes. It applies the entered interest tax rate to show the after-tax maturity amount.

What if I miss a payment?

This tool assumes normal monthly payments. In reality, missed payments reduce interest and the maturity amount.

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