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Currently the Amortization Schedule Calculator is the most popular financial calculator on this website. It calculates one of four unknowns or you can provide all the values. You are also in control of the loan and first payment dates. More below...»

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Related: Need to amortize a really big debt? US National Debt Calculator handles debts to $99 trillion. Amortize entire debt or your family's share of the debt (surprise!). Also, generic use for bond coupon schedules.

Important Note About Dates: This calculator allows irregular length first periods. That is, the calculator calculates the exact amount of interest due even when the initial period is shorter or longer than the other scheduled periods. This will produce interest charges that do not match other calculators. If you want to match other calculators then set the "Loan Date" and "1st Payment Date" so that they equal one full period as set in "Payment Frequency". Example: If the "Loan Date" is May 15th and the "Payment Frequency" is "Monthly", then the "1st Payment Date" should be set to June 15th, that is IF you want a conventional interest calculation. See the end of the "Help" text for some more details.

What is amortization? According to, "amortization means a debt is being paid off by a series of payments". When people search for an amortization calculator, they search for it using many different search phrases. If you are searching for any of these financial calculators, this calculator should meet your needs. If it doesn't, feel free to tell me what you need in the comment area below and there is a good chance I'll be able to make a recommendation.

Related: Don't over pay, don't under collect. If you need to track payments on the exact date they are paid (or missed) for whatever amount, then use the loan payoff calculator. For a step-by-step example see the payoff calculation tutorial.

This website has dozens of financial calculators that create various amortization schedules, payment schedules, withdrawal schedules and general cash flow schedules. This is a complete list of our free, online calculators. Feel free to surf!

Need More Features?

The loan calculator, mortgage calculator and
auto loan calculator have all recently been updated.

  • Supports setting dates - just like this calculator
  • User controls when and how odd day interest is due
  • Do "what-if" with extra payments
  • User can select last month for year end totals

524 thoughts on “amortization-schedule

  1. Is there a way to post extra payment against principle?

    • There is, but not with the amortization schedule. Please use the recently updated loan calculator. It now has the same features as the amortization schedule plus a few more including the ability to add a series of extra payments or a single extra payment. If you need even more flexibility, then I’ll make other suggestions.

      • I’m trying to figure the payoff amount to close a loan that would ordinarily run for another 3 years. The hard part comes in because my debtor paid a one time principal-only $10,000 reduction and then 5 months later paid another $5,000 to reduce the principal even further. Is there a way to enter two disparate amounts paid at these odd intervals and still come up with the correct balloon payment he needs to make to pay the loan off early?

        • The amortization schedule calculator is not designed for such flexibility. However this calculator can be used as a loan payoff calculator. Please scroll down the page and look at tutorial #25. I also suggest you take a look at tutorial #1 to get started.

          The above-suggested calculator allows users to enter payments made on any date for any amount. Once you have reviewed the tutorials, if you have any questions, please ask.

  2. This is a really helpful calculator. There is a down payment assistance program for first time homebuyers in San Diego. They offer a payment deferred (for 30 yrs) piggyback loan at 3% for up to 17% of the purchase price. As your calc shows, 17% of anything is pretty huge after 30 yrs of deferred payments.

    • Wow, I wasn’t aware of such a program. That’s too bad. Subsidies just enable the sellers to get a higher price than they would otherwise be able to get. And in addition, they expose the taxpayers to payback risks.

  3. Karl
    Love this amortization program
    Can I buy this program which allows me to choose an old state date and also print the schedule. I have a Mac

    • Glad you like the calculator. The software I have available for download only runs on Window PCs. However, it’s not clear to me what you need to do that this calculator won’t do? (I think there’s a typo in you question.) This calculator does allow you to set any date you need back to January 1, 1970.

  4. I want a calculator that allows me to put in the date the payment was actually made and it calculates the principal and interest split. Can you help me with that?

    Thank you

    • Sure can. Please see this loan payoff calculator.

      Above will let you enter individual or series of payments with any payment date. You can also change rates and have additional borrows if needed.

      The best way for learning how to use it, I think, is to scroll down the page to the tutorials. Everyone should review tutorial #1 for orientation. Then tutorial #25 explicitly addresses your requirement.

  5. Does amortization HAVE to happen only one way? For example, rather than the first payment being nearly all interest, may the first payment be nearly all principle?

    • No, it does not. I have had users mention that there are loans where all the interest is paid at the end. I have no first hand experience with this however.

      Under the "Amortization Method" setting, you can select "Fixed Principal" and depending on other factors, the 1st payment may have a larger amount allocated to principal than to interest. But for this method, the payment amount declines. The total interest paid will be less than with the normal method.

  6. Hi, any way to figure out what the effective amortization is?

    • "Effective amortization" is not a term with which I’m familiar. Can you give me an example or briefly explain what it is? Then I’ll look into it.

  7. Can make same calculation by excel

    • From the "Print Preview" view, it is possible to select the entire schedule and then copy/paste it into Excel. You may have to use Excel’s "Paste Special" feature and paste it as unformatted text depending on which browser you are using.

      If you want to export an amortization schedule to Excel, then the C-Value! program has that feature. It costs $49.95 and runs on any Windows computer.

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