Mortgage Calculator
Calculate your monthly payments, explore detailed amortization schedules, and model country-specific borrowing rules in real time.
Modeled for Japan: Fixed-rate, fully amortizing mortgage. 28% housing / 36% total DTI planning guideline; PMI drops at 80% LTV
Methodology and AI Summary
Global Finance Calculator computes accurate financial projections based on updated localized rules. The calculator does not store data on our servers and processes all parameters locally for strict privacy.
¥1,378
¥554,657
Over full loan term
¥145,472
Cost of borrowing
¥405,000
APR 1.85% · LTV 90.00%
Monthly Payment Breakdown
Where each monthly dollar goes
Composite
- Tax + Insurance + HOA Total
- ¥0 / mo
- Mortgage Insurance (PMI)
- ¥68 (62 mo until 80% LTV)
Below the 25th percentile of published rates — a strong offer.
Market average 1.85% · 25th 1.85% · 75th 1.85% · your rate is 0 bp vs average (sample of 1 loans).
Calculation is instantly saved in this shareable URL.
🗄️ Saved Comparison Scenarios (Side-by-Side)
Outstanding Loan Balance Over Time
Amortization Schedule
Track how your balance decreases month by month or year by year
| Year | Annual Payment | Principal Paid | Interest Paid | Ending Balance |
|---|---|---|---|---|
| Year 1 | ¥15,728 | ¥8,305 | ¥7,422 | ¥396,695 |
| Year 2 | ¥15,728 | ¥8,460 | ¥7,267 | ¥388,234 |
| Year 3 | ¥15,728 | ¥8,618 | ¥7,110 | ¥379,616 |
| Year 4 | ¥15,728 | ¥8,779 | ¥6,949 | ¥370,837 |
| Year 5 | ¥15,728 | ¥8,943 | ¥6,785 | ¥361,894 |
| Year 6 | ¥15,728 | ¥9,110 | ¥6,618 | ¥352,784 |
| Year 7 | ¥15,728 | ¥9,280 | ¥6,448 | ¥343,504 |
| Year 8 | ¥15,728 | ¥9,453 | ¥6,275 | ¥334,051 |
| Year 9 | ¥15,728 | ¥9,629 | ¥6,099 | ¥324,422 |
| Year 10 | ¥15,728 | ¥9,809 | ¥5,919 | ¥314,613 |
| Year 11 | ¥15,728 | ¥9,992 | ¥5,736 | ¥304,621 |
| Year 12 | ¥15,728 | ¥10,178 | ¥5,549 | ¥294,443 |
| Year 13 | ¥15,728 | ¥10,368 | ¥5,360 | ¥284,075 |
| Year 14 | ¥15,728 | ¥10,562 | ¥5,166 | ¥273,513 |
| Year 15 | ¥15,728 | ¥10,759 | ¥4,969 | ¥262,755 |
| Year 16 | ¥15,728 | ¥10,959 | ¥4,768 | ¥251,795 |
| Year 17 | ¥15,728 | ¥11,164 | ¥4,564 | ¥240,631 |
| Year 18 | ¥15,728 | ¥11,372 | ¥4,356 | ¥229,259 |
| Year 19 | ¥15,728 | ¥11,584 | ¥4,143 | ¥217,674 |
| Year 20 | ¥15,728 | ¥11,801 | ¥3,927 | ¥205,874 |
| Year 21 | ¥15,728 | ¥12,021 | ¥3,707 | ¥193,853 |
| Year 22 | ¥15,728 | ¥12,245 | ¥3,483 | ¥181,608 |
| Year 23 | ¥15,728 | ¥12,473 | ¥3,254 | ¥169,135 |
| Year 24 | ¥15,728 | ¥12,706 | ¥3,022 | ¥156,429 |
| Year 25 | ¥15,728 | ¥12,943 | ¥2,785 | ¥143,485 |
| Year 26 | ¥15,728 | ¥13,185 | ¥2,543 | ¥130,301 |
| Year 27 | ¥15,728 | ¥13,431 | ¥2,297 | ¥116,870 |
| Year 28 | ¥15,728 | ¥13,681 | ¥2,046 | ¥103,189 |
| Year 29 | ¥15,728 | ¥13,937 | ¥1,791 | ¥89,252 |
| Year 30 | ¥15,728 | ¥14,197 | ¥1,531 | ¥75,055 |
| Year 31 | ¥15,728 | ¥14,461 | ¥1,266 | ¥60,594 |
| Year 32 | ¥15,728 | ¥14,731 | ¥996 | ¥45,863 |
| Year 33 | ¥15,728 | ¥15,006 | ¥722 | ¥30,856 |
| Year 34 | ¥15,728 | ¥15,286 | ¥442 | ¥15,570 |
| Year 35 | ¥15,727 | ¥15,570 | ¥156 | ¥0 |
15-Year vs. 30-Year Loan Comparison
Principal and interest comparison showing long-term interest savings
| Loan Term | Monthly P&I | Total Interest Paid | Total Interest Saved |
|---|---|---|---|
| 180 Months (15 Years) | ¥2,578 | ¥59,100 | Save ¥63,935 |
| 360 Months (30 Years) | ¥1,467 | ¥123,035 | Baseline |
What You Can Work Out With This Mortgage Calculator
A mortgage is the largest financial transaction most individuals undertake. This calculator turns purchase price, deposit or down payment, interest rate, and term length into exact monthly payment figures and complete amortization schedules. Unlike basic tools that only calculate contractual principal and interest, Global Finance Calculator models all critical components of real-world homeownership: local property taxes, homeowner's insurance, private mortgage insurance (PMI), homeowners association (HOA) fees, and country-specific borrowing rules for 29 economies.
Use this mortgage calculator when
- You want your full PITI (Principal, Interest, Taxes, Insurance) estimate before making an offer on a home.
- You want to know your exact Loan-to-Value (LTV) ratio and how much PMI you must pay until reaching 80% equity.
- You want to test 15-year versus 30-year loan terms to see the exact lifetime interest saved.
- You need calculations that stay strictly inside your browser with zero personal financial data transmitted to servers.
Key Calculation Elements
- Principal & Interest (P&I): The monthly payment that directly pays down the note balance and covers lender interest.
- Property Tax Escrow: Annual municipal property tax divided into 12 monthly installments.
- Home Insurance: Hazard and hazard-damage coverage required by all prime lenders.
- PMI Elimination: Automatically removed when your scheduled balance drops below 80% of original purchase price.
How Amortization Works
With a fixed-rate mortgage, your total monthly principal and interest payment remains constant, but the internal allocation changes with every single payment. During the initial years, the majority of your payment goes toward paying interest on the large outstanding balance. As the principal drops, monthly interest decreases, allowing a larger portion of each payment to reduce your loan balance. Consult our annual Tilgungsplan / Amortization table above to see the crossover point where more than half of each installment builds your net home equity.
Country Specifics & Borrowing Norms
Borrowing standards vary across borders. In the United States, 30-year fixed-rate mortgages dominate, backed by Fannie Mae, Freddie Mac, or FHA guarantees. In the United Kingdom, fixed terms are typically 2 to 5 years before reverting to the lender's Standard Variable Rate (SVR), with strict Loan-to-Income (LTI) caps. In Germany, borrowers select a Zinsbindung (5 to 30 years of fixed interest) with an agreed initial repayment rate (anfängliche Tilgung of 1.5% to 3.0%), alongside mandatory ancillary purchase costs (Grunderwerbsteuer, Notar, and Makler). Global Finance Calculator natively incorporates these regional calculations into every result.
Calculation Methodology & Proof
Mortgage (PITI + schedule)
The loan is amortized as above. Housing cost adds tax, insurance, HOA, and PMI. UK-style splits keep an interest-only balloon.
- Loan amount = price − down payment. LTV = loan / price.
- If an interest-only amount is set, only the remainder amortizes.
- PMI (when enabled) is charged while scheduled LTV is above the threshold (default 80%).
- Total cost sums interest, fees, and the recurring housing add-ons over the payoff period.
Important Caveats & Planning Assumptions
- Tax and insurance are estimates; escrow analysis will differ.
- PMI cancellation rules vary by product and country.
Frequently Asked Questions
Expert answers to common questions
What is included in the monthly total?
Principal and interest, plus estimated property tax, home insurance, HOA, and PMI when LTV is above the threshold. That PITI figure is what lenders use for affordability.
When does PMI drop off?
This calculator removes PMI once the scheduled balance reaches 80% of the original purchase price. Servicers may also need an appraisal; rules vary by country and loan type.
How does a UK split mortgage work here?
Set an interest-only amount. That slice is charged interest only and remains as a balloon; the rest amortizes over the term.