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Enter the loan amount, interest rate, and term to quickly calculate monthly payments and total interest on consumer loans.
Monthly payments are fixed, with a higher interest proportion in early installments.
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
This calculator compares two monthly repayment patterns for a principal amount entered in Chinese yuan (CNY): equal installments or equal principal. Enter principal, an annual percentage rate, and a term of 6, 12, 18, 24, 36, 48, or 60 months. The result shows payment amount, estimated total interest, and total paid; equal-principal mode also shows the first and last installment and the step-down amount.
For equal installments, the payment is held level while its interest share falls and its principal share rises. With principal P, monthly rate i (entered annual rate divided by 12), and n payments, the standard fixed-payment calculation is M = P × i(1+i)n / ((1+i)n−1). At a zero rate, the principal is divided evenly across the term. Equal principal instead repays P/n of principal each month; interest is calculated on the remaining balance, so the first payment is larger and later payments decline.
For example, CNY 100,000 over 12 months at a fixed 7.2% annual rate gives a monthly rate of 0.6%. Equal installments are about CNY 8,662 per month after whole-yuan display rounding, with approximately CNY 3,943 total interest. Equal principal starts near CNY 8,933 and declines by about CNY 50 each month, with approximately CNY 3,900 total interest. The underlying results are rounded to whole yuan for display.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
Enter the principal in yuan, not a property price or a monthly budget. The displayed currency is CNY.
Select one of the available month counts from 6 through 60 months. The calculation assumes monthly payments across that fixed term.
Type the annual percentage rate as a percentage number. For instance, enter 7.2 for 7.2%; the model converts it to a monthly rate by dividing by 12.
Choose equal installments to see a level payment, or equal principal to see a larger first payment that steps down as the outstanding balance falls. Compare total interest and total paid for the same inputs.
Use cases
See how the tool fits into real work and everyday tasks.
A borrower reviewing two proposed schedules can use matching principal, term, and rate inputs to see how payment timing changes the displayed totals.
A household can estimate a fixed-rate monthly amount and compare it with a planned budget before asking a lender for an itemized quote.
Q&A
Find concise answers to common questions and confusing cases.
Each period repays the same principal amount, while interest is charged on the larger unpaid balance at the start. As the balance falls, the interest portion and total payment fall.
In equal-installment mode, the principal is divided evenly across the selected number of months, so no interest is added by the model.
This estimate models principal and fixed-rate monthly interest only. Fees, insurance, changing rates, irregular payment dates, and lender-specific rounding can change an actual schedule.
Notes
Review scope, result limitations, and important precautions before use.
The calculation is a simplified fixed-rate model for CNY amounts. It does not determine eligibility, quote a lender’s available rate, calculate an all-in annual borrowing cost or APR, or include fees, insurance, taxes, rate changes, or early repayment. Displayed amounts are rounded to whole yuan; confirm the payment schedule, charges, and contract terms with the lender before making a borrowing decision.
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