Loan Calculator
Payment & amortizationUse this calculator for any fixed-rate loan: mortgages, auto loans, personal loans, or bonds. Choose amortized (equal payments of principal and interest), deferred (interest-only for a period, then amortized), or bond-style (coupons plus face at maturity). Enter the loan amount, rate, term, and payment frequency to see your payment, total interest, and full schedule with a principal-versus-interest breakdown.
Inputs
Results
Total principal vs interest
- PrincipalCA$100,000 (79%)
- InterestCA$27,279 (21%)
Principal and interest over time
Amount of principal and interest paid each year over the life of the loan.
| Payment # | Payment | Principal | Interest | Balance |
|---|---|---|---|---|
| 1 | CA$1,061 | CA$644 | CA$417 | CA$99,356 |
| 2 | CA$1,061 | CA$647 | CA$414 | CA$98,709 |
| 3 | CA$1,061 | CA$649 | CA$411 | CA$98,060 |
| 4 | CA$1,061 | CA$652 | CA$409 | CA$97,408 |
| 5 | CA$1,061 | CA$655 | CA$406 | CA$96,753 |
| 6 | CA$1,061 | CA$658 | CA$403 | CA$96,096 |
| 7 | CA$1,061 | CA$660 | CA$400 | CA$95,435 |
| 8 | CA$1,061 | CA$663 | CA$398 | CA$94,772 |
| 9 | CA$1,061 | CA$666 | CA$395 | CA$94,107 |
| 10 | CA$1,061 | CA$669 | CA$392 | CA$93,438 |
| 11 | CA$1,061 | CA$671 | CA$389 | CA$92,767 |
| 12 | CA$1,061 | CA$674 | CA$387 | CA$92,093 |
| 13 | CA$1,061 | CA$677 | CA$384 | CA$91,416 |
| 14 | CA$1,061 | CA$680 | CA$381 | CA$90,736 |
| 15 | CA$1,061 | CA$683 | CA$378 | CA$90,053 |
| 16 | CA$1,061 | CA$685 | CA$375 | CA$89,368 |
| 17 | CA$1,061 | CA$688 | CA$372 | CA$88,680 |
| 18 | CA$1,061 | CA$691 | CA$370 | CA$87,988 |
| 19 | CA$1,061 | CA$694 | CA$367 | CA$87,294 |
| 20 | CA$1,061 | CA$697 | CA$364 | CA$86,597 |
| 21 | CA$1,061 | CA$700 | CA$361 | CA$85,898 |
| 22 | CA$1,061 | CA$703 | CA$358 | CA$85,195 |
| 23 | CA$1,061 | CA$706 | CA$355 | CA$84,489 |
| 24 | CA$1,061 | CA$709 | CA$352 | CA$83,781 |
| 25 | CA$1,061 | CA$712 | CA$349 | CA$83,069 |
| 26 | CA$1,061 | CA$715 | CA$346 | CA$82,354 |
| 27 | CA$1,061 | CA$718 | CA$343 | CA$81,637 |
| 28 | CA$1,061 | CA$721 | CA$340 | CA$80,916 |
| 29 | CA$1,061 | CA$724 | CA$337 | CA$80,193 |
| 30 | CA$1,061 | CA$727 | CA$334 | CA$79,466 |
| 31 | CA$1,061 | CA$730 | CA$331 | CA$78,737 |
| 32 | CA$1,061 | CA$733 | CA$328 | CA$78,004 |
| 33 | CA$1,061 | CA$736 | CA$325 | CA$77,269 |
| 34 | CA$1,061 | CA$739 | CA$322 | CA$76,530 |
| 35 | CA$1,061 | CA$742 | CA$319 | CA$75,788 |
| 36 | CA$1,061 | CA$745 | CA$316 | CA$75,043 |
| 37 | CA$1,061 | CA$748 | CA$313 | CA$74,295 |
| 38 | CA$1,061 | CA$751 | CA$310 | CA$73,544 |
| 39 | CA$1,061 | CA$754 | CA$306 | CA$72,790 |
| 40 | CA$1,061 | CA$757 | CA$303 | CA$72,033 |
| 41 | CA$1,061 | CA$761 | CA$300 | CA$71,272 |
| 42 | CA$1,061 | CA$764 | CA$297 | CA$70,508 |
| 43 | CA$1,061 | CA$767 | CA$294 | CA$69,742 |
| 44 | CA$1,061 | CA$770 | CA$291 | CA$68,972 |
| 45 | CA$1,061 | CA$773 | CA$287 | CA$68,198 |
| 46 | CA$1,061 | CA$777 | CA$284 | CA$67,422 |
| 47 | CA$1,061 | CA$780 | CA$281 | CA$66,642 |
| 48 | CA$1,061 | CA$783 | CA$278 | CA$65,859 |
| 49 | CA$1,061 | CA$786 | CA$274 | CA$65,073 |
| 50 | CA$1,061 | CA$790 | CA$271 | CA$64,283 |
| 51 | CA$1,061 | CA$793 | CA$268 | CA$63,490 |
| 52 | CA$1,061 | CA$796 | CA$265 | CA$62,694 |
| 53 | CA$1,061 | CA$799 | CA$261 | CA$61,895 |
| 54 | CA$1,061 | CA$803 | CA$258 | CA$61,092 |
| 55 | CA$1,061 | CA$806 | CA$255 | CA$60,286 |
| 56 | CA$1,061 | CA$809 | CA$251 | CA$59,477 |
| 57 | CA$1,061 | CA$813 | CA$248 | CA$58,664 |
| 58 | CA$1,061 | CA$816 | CA$244 | CA$57,848 |
| 59 | CA$1,061 | CA$820 | CA$241 | CA$57,028 |
| 60 | CA$1,061 | CA$823 | CA$238 | CA$56,205 |
| 61 | CA$1,061 | CA$826 | CA$234 | CA$55,378 |
| 62 | CA$1,061 | CA$830 | CA$231 | CA$54,548 |
| 63 | CA$1,061 | CA$833 | CA$227 | CA$53,715 |
| 64 | CA$1,061 | CA$837 | CA$224 | CA$52,878 |
| 65 | CA$1,061 | CA$840 | CA$220 | CA$52,038 |
| 66 | CA$1,061 | CA$844 | CA$217 | CA$51,194 |
| 67 | CA$1,061 | CA$847 | CA$213 | CA$50,347 |
| 68 | CA$1,061 | CA$851 | CA$210 | CA$49,496 |
| 69 | CA$1,061 | CA$854 | CA$206 | CA$48,641 |
| 70 | CA$1,061 | CA$858 | CA$203 | CA$47,783 |
| 71 | CA$1,061 | CA$862 | CA$199 | CA$46,922 |
| 72 | CA$1,061 | CA$865 | CA$196 | CA$46,057 |
| 73 | CA$1,061 | CA$869 | CA$192 | CA$45,188 |
| 74 | CA$1,061 | CA$872 | CA$188 | CA$44,316 |
| 75 | CA$1,061 | CA$876 | CA$185 | CA$43,440 |
| 76 | CA$1,061 | CA$880 | CA$181 | CA$42,560 |
| 77 | CA$1,061 | CA$883 | CA$177 | CA$41,677 |
| 78 | CA$1,061 | CA$887 | CA$174 | CA$40,790 |
| 79 | CA$1,061 | CA$891 | CA$170 | CA$39,899 |
| 80 | CA$1,061 | CA$894 | CA$166 | CA$39,005 |
| 81 | CA$1,061 | CA$898 | CA$163 | CA$38,106 |
| 82 | CA$1,061 | CA$902 | CA$159 | CA$37,205 |
| 83 | CA$1,061 | CA$906 | CA$155 | CA$36,299 |
| 84 | CA$1,061 | CA$909 | CA$151 | CA$35,390 |
| 85 | CA$1,061 | CA$913 | CA$147 | CA$34,476 |
| 86 | CA$1,061 | CA$917 | CA$144 | CA$33,559 |
| 87 | CA$1,061 | CA$921 | CA$140 | CA$32,638 |
| 88 | CA$1,061 | CA$925 | CA$136 | CA$31,714 |
| 89 | CA$1,061 | CA$929 | CA$132 | CA$30,785 |
| 90 | CA$1,061 | CA$932 | CA$128 | CA$29,853 |
| 91 | CA$1,061 | CA$936 | CA$124 | CA$28,917 |
| 92 | CA$1,061 | CA$940 | CA$120 | CA$27,976 |
| 93 | CA$1,061 | CA$944 | CA$117 | CA$27,032 |
| 94 | CA$1,061 | CA$948 | CA$113 | CA$26,084 |
| 95 | CA$1,061 | CA$952 | CA$109 | CA$25,132 |
| 96 | CA$1,061 | CA$956 | CA$105 | CA$24,176 |
| 97 | CA$1,061 | CA$960 | CA$101 | CA$23,217 |
| 98 | CA$1,061 | CA$964 | CA$97 | CA$22,253 |
| 99 | CA$1,061 | CA$968 | CA$93 | CA$21,285 |
| 100 | CA$1,061 | CA$972 | CA$89 | CA$20,313 |
| 101 | CA$1,061 | CA$976 | CA$85 | CA$19,337 |
| 102 | CA$1,061 | CA$980 | CA$81 | CA$18,357 |
| 103 | CA$1,061 | CA$984 | CA$76 | CA$17,372 |
| 104 | CA$1,061 | CA$988 | CA$72 | CA$16,384 |
| 105 | CA$1,061 | CA$992 | CA$68 | CA$15,392 |
| 106 | CA$1,061 | CA$997 | CA$64 | CA$14,395 |
| 107 | CA$1,061 | CA$1,001 | CA$60 | CA$13,395 |
| 108 | CA$1,061 | CA$1,005 | CA$56 | CA$12,390 |
| 109 | CA$1,061 | CA$1,009 | CA$52 | CA$11,381 |
| 110 | CA$1,061 | CA$1,013 | CA$47 | CA$10,367 |
| 111 | CA$1,061 | CA$1,017 | CA$43 | CA$9,350 |
| 112 | CA$1,061 | CA$1,022 | CA$39 | CA$8,328 |
| 113 | CA$1,061 | CA$1,026 | CA$35 | CA$7,302 |
| 114 | CA$1,061 | CA$1,030 | CA$30 | CA$6,272 |
| 115 | CA$1,061 | CA$1,035 | CA$26 | CA$5,238 |
| 116 | CA$1,061 | CA$1,039 | CA$22 | CA$4,199 |
| 117 | CA$1,061 | CA$1,043 | CA$17 | CA$3,156 |
| 118 | CA$1,061 | CA$1,048 | CA$13 | CA$2,108 |
| 119 | CA$1,061 | CA$1,052 | CA$9 | CA$1,056 |
| 120 | CA$1,061 | CA$1,056 | CA$4 | CA$0 |
For illustration only. This calculator does not constitute financial or legal advice. Consult a qualified advisor for your situation.
About this calculator
This calculator handles the most common loan structures: standard amortized loans (equal payments over the term), deferred-payment loans (interest-only for a period, then amortized), and fixed-coupon bonds. It is for anyone comparing loan offers, planning repayments, or checking how much interest they will pay over time.
Use it when you know the principal, interest rate, and term. You can choose payment frequency (monthly, bi-weekly, etc.) and compounding to match your loan. Results include the payment amount, total interest, and a full schedule so you can see how much of each payment goes to principal versus interest. For bonds, you can solve for price given a yield or for yield given a price.
How this is calculated
Amortized loan
An amortized loan has equal periodic payments (e.g. monthly) that include both interest and principal. Early in the term, most of each payment goes to interest; as the balance decreases, more goes to principal. The payment is set so the balance reaches zero at the end of the term. Used for mortgages, auto loans, and personal loans.
The payment amount is given by the standard amortization formula:
Payment = P × [r(1+r)n] / [(1+r)n − 1]
where P is principal, r is the periodic interest rate (converted from your stated annual rate and compounding), and n is the number of payments. Compounding (annually, semi-annually, monthly, etc.) determines how the annual rate is converted to a per-payment rate; e.g. 6% compounded semi-annually gives a slightly lower effective monthly rate than 6% compounded monthly. Continuous compounding uses e^(r×t) − 1 per period.
Deferred payment loan (interest-only then amortize)
This loan has two phases. In the first phase you pay interest only—no principal—so the balance stays the same. After that, the loan amortizes over the remaining term using the same payment formula above with the remaining number of payments. Interest-only payment:
Interest-only payment = Principal × (annual rate / periods per year)
Common in some mortgages and construction loans.
Bond
A bond pays periodic coupon interest (face value × coupon rate) and repays face value at maturity. There is no principal paydown until maturity. The bond price is the present value of all future coupons plus the face value, discounted at the yield per period. Yield to maturity (YTM) is the annualized return if you hold to maturity; we solve for the yield that makes this present value equal to the price.
Price = Σ (Coupon / (1+y)t) + Face / (1+y)n
where y is the yield per period and n is the number of periods. Buy at a discount (price < face) → YTM > coupon rate; buy at a premium → YTM < coupon rate.
Assumptions
We assume a fixed interest rate and that payments are made on schedule. For bonds, we assume no default and that coupons are paid on the frequency you select. This calculator does not constitute financial or legal advice; consult a qualified advisor for your situation.
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