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An amortization calculator is used to determine the periodic payment amount due on a loan (typically a mortgage), based on the amortization process.. The amortization repayment model factors varying amounts of both interest and principal into every installment, though the total amount of each payment is the same.
This amortization schedule is based on the following assumptions: First, it should be known that rounding errors occur and, depending on how the lender accumulates these errors, the blended payment (principal plus interest) may vary slightly some months to keep these errors from accumulating; or, the accumulated errors are adjusted for at the end of each year or at the final loan payment.
The formula for EMI (in arrears) is: [2] = (+) or, equivalently, = (+) (+) Where: P is the principal amount borrowed, A is the periodic amortization payment, r is the annual interest rate divided by 100 (annual interest rate also divided by 12 in case of monthly installments), and n is the total number of payments (for a 30-year loan with monthly payments n = 30 × 12 = 360).
Witt's book gave tables based on 10% (the maximum rate of interest allowable on loans) and other rates for different purposes, such as the valuation of property leases. Witt was a London mathematical practitioner and his book is notable for its clarity of expression, depth of insight, and accuracy of calculation, with 124 worked examples.
Where, as above, C is annuity payment, PV is principal, n is number of payments, starting at end of first period, and i is interest rate per period. Equivalently C is the periodic loan repayment for a loan of PV extending over n periods at interest rate, i. The formula is valid (for positive n, i) for ni≤3.
Net Effective Rent, sometimes Net Effective Rate, or NER for short, is a measure of the expected income from a tenant, seen mostly in commercial real estate. It is the net present value of all the rental payments over the period of the lease, as well as any abatements or incentives that might add to or lower these payments. An example of a ...
The formula for the present value of a regular stream of future payments (an annuity) is derived from a sum of the formula for future value of a single future payment, as below, where C is the payment amount and n the period. A single payment C at future time m has the following future value at future time n:
A 100 GRM (monthly rents) = 8.33 GRM (annual rents). An 8.33 GRM calculated on annual rents suggests the gross rent will pay for the property in 8.33 years. The common measure of rental real estate value based on net return rather than gross rental income is the capitalization rate (or cap rate). In contrast to the GRM, the cap rate is not a ...