ThinkVault ToolsFixed Deposit Calculator

Time deposit & CD interest

Fixed Deposit Calculator

Term unit

Interest method

1 to 11 months. For 12 months or more, switch to years.

Results

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Total interest

$2,000.00

Maturity amount $102,000.00

Deposit amount98.0%

$100,000.00

Total interest2.0%

$2,000.00

Average monthly interest$333.33

Interest method

Simple

Standard time deposits normally use simple interest; compounding only applies if interest rolls over.

Return over the term

2.00%

6 months in total

Total interest

$2,000.00

Method and common questions

Tax, lending, holiday and protection rules vary by place and date. Check current local rules and provider terms. Results are estimates.

How is fixed-deposit interest calculated?

Assume 100,000 currency units at 4% for 6 months: simple interest is 100,000 × 4% × 6/12 = 2,000, with about 102,000 units at maturity. Use one currency for all amounts; the values are examples only.

Simple, compound and monthly payout

  • Simple: interest on the original principal only. Check whether your product actually uses simple interest, compounding or payouts; no method is assumed to apply to every bank or jurisdiction.
  • Compound: interest is added to principal and earns interest itself; only applies if the product truly rolls over.
  • Monthly payout: annual interest estimated and paid monthly; the principal does not grow.

Method

Simple interest, annual compounding and monthly-payout scenarios; no live bank rates are loaded or compared.

Last checked: 2026-10-24

FAQ

Does 4% p.a. mean I earn 4% in 3 months?
No. The annual rate is pro-rated by term, so 3 months is roughly a quarter of a year’s interest, subject to the bank’s day count and terms.
Is compound always better than simple?
Only if interest can really be reinvested at the same rate. If interest is paid into another account at a different rate, it is not the same compounding.
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