🏦 Deposit comparison

Deposit Interest Rate Comparison Calculator

Compare two deposit offers on the same principal and term instead of relying on headline rates.

Calculator inputs

Principal (TWD)

Term (months)

Interest method

Option A annual rate (%)

Option B annual rate (%)

Interest tax/withholding scenario (%)Default 0%. Actual tax treatment depends on withholding, savings-investment special deduction, and your tax situation.

After-tax interest advantage of B over A

—

A pre-tax interest—

B pre-tax interest—

A after-tax interest—

B after-tax interest—

Compare more than the rate:Also check term, early-withdrawal rules, fixed/variable pricing, accrual rules, compounding, and deposit-insurance eligibility. This tool intentionally does not scrape bank rates, so stale promotional rates are not presented as current.

Official sources (checked 2026-08-22)

Compare actual interest, not just headline rates

The same one-percentage-point rate gap can mean very different dollars depending on principal and term. Put both offers on the same principal and duration for a cleaner comparison.

Why no built-in bank rates?

Promotional rates, caps, new-customer offers, and digital-account bonuses change quickly. Manual rate entry keeps the calculator useful without presenting stale promotions as current.