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Calculate monthly payments, total interest, and amortization schedules for conventional, provident fund, or combination loans to help you plan your mortgage.
Professional mortgage calculation tool, supporting commercial loans, provident fund loans, and combined loans, as well as two repayment methods: equal principal and interest, and equal principal.
Enter the parameters to see the calculation.
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
This calculator is for a China mortgage estimate. Enter the loan principal in units of 10,000 CNY, choose a 10-, 15-, 20-, 25- or 30-year term, and enter an annual interest rate as a percentage. For example, 100 means a principal of CNY 1,000,000. The result is shown in yuan and rounded to whole yuan.
It compares two repayment patterns: equal principal and interest, which produces a level monthly payment under the calculation assumptions, and equal principal, which repays the same principal amount each month so the payment starts higher and declines. It reports the monthly payment (or first payment), total interest, total repayment and a principal-versus-interest chart. It does not show a month-by-month schedule.
The entered annual percentage rate is converted to a monthly rate by dividing by 100 and then by 12. The selected number of years is multiplied by 12 to get the number of payments. With principal P, monthly rate i and payment count n, the level-payment amount is calculated as follows:
M = P × i × (1 + i)n ÷ ((1 + i)n − 1)For equal principal, each month's principal portion is P ÷ n; interest is calculated on the outstanding balance. The calculator summarizes the first payment and the regular monthly decrease. At a zero rate, the equal-payment formula is treated as principal divided evenly by the number of months.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
Enter the amount in 10,000-CNY units. If the borrowed principal is CNY 800,000, enter 80. Use the loan amount, not the home's purchase price.
Select one of the available whole-year terms from 10 to 30 years. Compare equal principal and interest with equal principal using the same amount, term and rate.
Use the rate relevant to the loan scenario. The preset choices are fixed sample inputs; they are not a live quote or an automatic LPR update. You can enter a different percentage directly.
For equal principal and interest, note the level monthly payment. For equal principal, note the first-month payment and monthly decline. Compare total interest and total repayment, remembering that displayed amounts are rounded to yuan.
Illustration: At CNY 1,000,000, 30 years and a fixed 4.2% annual rate, equal principal and interest is about CNY 4,890 per month, with about CNY 760,462 in total interest. Equal principal starts near CNY 6,278, falls by about CNY 10 per month, and totals about CNY 631,750 in interest. These are formula-based illustrations, not a lender offer.
Use cases
See how the tool fits into real work and everyday tasks.
If you already have an approximate China loan principal and a candidate rate, use the level-payment result as one principal-and-interest budget figure. Add other housing expenses separately before judging affordability.
Keep principal, rate and term constant, then switch repayment methods. The first payment under equal principal is higher, while its total interest is generally lower under the same fixed-rate assumptions. This can help you prepare questions about cash flow for your lender.
If a lender gives you more than one rate scenario, enter each rate separately and record the inputs alongside the totals. That makes the comparison easier to revisit when the quoted terms change.
Q&A
Find concise answers to common questions and confusing cases.
No. The amount input is in 10,000 CNY units and results are in CNY. The repayment comparison is aimed at China home-loan scenarios; it does not convert currencies or apply US property taxes, escrow, mortgage insurance or lending rules.
No. Presets are fixed values supplied as input shortcuts. LPR is a published China pricing reference, while the rate applied to an individual loan depends on its terms. Check your current quote or contract and enter the relevant annual rate yourself.
This calculator displays summary amounts and a principal-versus-interest chart, not a payment schedule. Ask the lender for the contractual repayment plan when you need each due date's principal, interest and remaining balance.
The estimate holds the entered rate and term constant and rounds results to whole yuan. Contractual timing, rate changes, day-count conventions, lender rounding or other charges can change actual amounts; use the lender's repayment plan for billing details.
Notes
Review scope, result limitations, and important precautions before use.
This is a fixed-rate planning calculation for one principal amount and one repayment method. It does not model a rate reset, floating-rate changes, early repayment, fees, insurance, taxes, loan approval, local eligibility limits, or a split commercial-and-housing-fund combination loan. Although one preset is labeled for a fund-loan rate, the tool does not switch loan type or verify eligibility.
The preset rates are not current-rate data. If you want to use LPR as context, check the latest official publication and the actual rate and repricing terms in your own loan documents. A mathematical estimate is not a bank quote, credit decision or financial advice; confirm payment obligations with the lender before making a borrowing decision.
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