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  2. Wikipedia:Reference desk/Archives/Mathematics/2017 July 13

    en.wikipedia.org/wiki/Wikipedia:Reference_desk/...

    The outstanding balance due to me (of $378.29) is subjected to an annual interest rate of 13%. The interest is compounded daily. So, is there some Excel formula I can employ that will calculate how much interest this person owes me? Thanks. Joseph A. Spadaro 05:37, 13 July 2017 (UTC) I would set up a very simple spreadsheet with columns: A:Date ...

  3. Mortgage calculator - Wikipedia

    en.wikipedia.org/wiki/Mortgage_calculator

    r - the monthly interest rate. Since the quoted yearly percentage rate is not a compounded rate, the monthly percentage rate is simply the yearly percentage rate divided by 12. For example, if the yearly percentage rate was 6% (i.e. 0.06), then r would be / or 0.5% (i.e. 0.005).

  4. Amortization calculator - Wikipedia

    en.wikipedia.org/wiki/Amortization_calculator

    Converting an annual interest rate (that is to say, annual percentage yield or APY) to the monthly rate is not as simple as dividing by 12; see the formula and discussion in APR. However, if the rate is stated in terms of "APR" and not "annual interest rate", then dividing by 12 is an appropriate means of determining the monthly interest rate.

  5. How to calculate interest on a loan: Tools to make it easy

    www.aol.com/finance/calculate-interest-loan...

    For example, if you take out a five-year loan for $20,000 and the interest rate on the loan is 5 percent, the simple interest formula would be $20,000 x .05 x 5 = $5,000 in interest. Who benefits ...

  6. Compound interest - Wikipedia

    en.wikipedia.org/wiki/Compound_interest

    The force of interest is less than the annual effective interest rate, but more than the annual effective discount rate. It is the reciprocal of the e -folding time. A way of modeling the force of inflation is with Stoodley's formula: δ t = p + s 1 + r s e s t {\displaystyle \delta _{t}=p+{s \over {1+rse^{st}}}} where p , r and s are estimated.

  7. Rate of return - Wikipedia

    en.wikipedia.org/wiki/Rate_of_return

    For example, if an investor puts $1,000 in a 1-year certificate of deposit (CD) that pays an annual interest rate of 4%, paid quarterly, the CD would earn 1% interest per quarter on the account balance. The account uses compound interest, meaning the account balance is cumulative, including interest previously reinvested and credited to the ...

  8. Day count convention - Wikipedia

    en.wikipedia.org/wiki/Day_count_convention

    The interest rate on the security or loan-type agreement, e.g., 5.25%. In the formulas this would be expressed as 0.0525. Date1 (Y1.M1.D1) Starting date for the accrual. It is usually the coupon payment date preceding Date2. Date2 (Y2.M2.D2) Date through which interest is being accrued. You could word this as the "to" date, with Date1 as the ...

  9. Flat rate (finance) - Wikipedia

    en.wikipedia.org/wiki/Flat_rate_(finance)

    This yields an annualized flat rate of 12%, and an annualized effective or true rate of 19.05%. The true rate can also be calculated by iteration from the amortization schedule, using the compound interest formula. To keep quoted interest rates as low as possible, institutions also often call for one-time origination or administration fees.