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# interest Nominal

Return the nominal annual interest rate. Excel: NOMINAL
Controller: CodeCogs

C++
Excel
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## InterestNominal

 doubleinterestNominal( double effRate int nper )
Calculates the nominal annual interest rate, given the effective rate and the number of compounding periods per year.

The function is based on the following equation:

### Example 1

#include <iostream>

#include <codecogs/finance/banking/interestnominal.h>

int main(int argc, char *argv[])
{
double rate;

printf("Effective rate\tPeriods\tNominal rate\n");
for (double a=0.0025; a<0.1; a+=0.005)
{
rate=Finance::Banking::interestNominal(a, 4);
printf("%f\t%i\t%f\n", a, 4, rate);
}
return 1;
}
Output:
Effective rate  Periods Nominal rate
0.002500        4       0.002498
0.007500        4       0.007479
0.012500        4       0.012442
0.017500        4       0.017386
0.022500        4       0.022313
0.027500        4       0.027221
0.032500        4       0.032111
0.037500        4       0.036984
0.042500        4       0.041839
0.047500        4       0.046677
0.052500        4       0.051497
0.057500        4       0.056300
0.062500        4       0.061086
0.067500        4       0.065856
0.072500        4       0.070608
0.077500        4       0.075344
0.082500        4       0.080064
0.087500        4       0.084767
0.092500        4       0.089454
0.097500        4       0.094125

### Parameters

 effRate The effective interest rate. nper The number of compounding periods per year.

### Returns

The nominal annual interest rate.

### Authors

James Warren (August 2005)
##### Source Code

Source code is available when you agree to a GP Licence or buy a Commercial Licence.

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