winpieTaiwan-focused

Mortgage CalculatorTW-specific

Calculate monthly payment, total interest, and amortization schedule for a Taiwan home loan. Supports new vs used homes (with the age + loan term ≤ 50 rule), grace periods, and bank appraisal shortfall detection.

Inputs

If the appraisal is lower than the price, the loan is based on the appraisal and you need a larger down payment.

Applied to the loan base (lower of transaction price and appraisal).

Results
Standard monthly payment
NT$44,957 / month
Negotiation rate
−16.7%
Listing NT$18M → transaction NT$15M
Loan base (min of price/appraisal)NT$15M
Loan amount (base × ratio)NT$12M
Effective down paymentNT$3M (20.0%)
Total interest over 30 yearsNT$4.18M (34.9%)
Total repaid (principal + interest)NT$16.18M

Does not include fire/earthquake insurance, legal fees, escrow fees, broker fees, or land registration fees. Actual monthly outlay will exceed the payment shown.

Repayment progress

Early years go mostly to interest; principal paydown accelerates later. During the grace period, the remaining principal is flat.

Taiwan mortgage conventions

  • New homes: up to 80% LTV, 40-year term, 2.0–2.5% rate typical
  • Used homes: 70% LTV typical; term capped by "age + term ≤ 50"
  • Grace period: 1–3 years of interest-only payments, then re-amortize
  • Bank appraisal (鑑價) may differ from purchase price, affecting actual LTV

Frequently asked

Is a grace period (寬限期) actually worth it?
During the grace period you pay interest only — no principal. Useful short-term for first-time buyers, newlyweds, or new parents who need cashflow flexibility, but total interest goes up materially and the post-grace amortization is squeezed into a shorter window, so the monthly payment jumps. Worth it only if the cash freed up is invested or applied to a chunky principal payment later.
Why is the loan term shorter for used homes?
Banks use the rule 'building age + loan term ≤ 50' (some use 50 - age) because aging buildings have weaker collateral value. A 25-year-old building typically gets capped at a 25-year term, raising the monthly payment compared to a new home. Run the calculator before signing.
What if the bank appraisal is below the purchase price?
LTV is calculated on the appraisal, not the purchase price. Example: NT$15M price, NT$14M appraisal, 80% LTV → 14M × 80% = NT$11.2M loan; you need to bring NT$3.8M down (vs the NT$3M you might have planned for). The tool flags appraisal shortfall.
Equal payment vs equal principal — which method?
Equal payment (most common): same payment every month; early payments are mostly interest, later are mostly principal. Equal principal: principal portion fixed, interest declines, total payment starts high and falls. Equal principal saves total interest but front-loads the burden, and not every bank offers it.
Are early prepayments penalized?
Some banks charge a penalty (typically 0.5-1% on prepayments above 20% of original loan in the first 1-3 years). Read your contract. If the penalty is small, prepayment almost always wins — you 'earn' the mortgage rate (2-3%) risk-free, beating most savings rates.
Does the tool store my purchase price or salary?
No. All math is local to your browser; nothing is uploaded.

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