Abonnementen

Renterekenmachine

Bereken het eindbedrag en de rente bij enkelvoudige of samengestelde rente — jaarlijks, halfjaarlijks, per kwartaal, maandelijks of dagelijks bijgeschreven.

Gebruik een decimaal getal of breuk voor een deel van een jaar, bv. 1.5

Resultaat

Vul waarden in en tik op Berekenen om het resultaat te zien.

Formule

I=PrtI = Prt

Simple interest: principal × yearly rate (as a decimal) × years.

A=P(1+rn)ntA = P\left(1 + \frac{r}{n}\right)^{nt}

Compound interest: the rate is split over n periods a year, and interest earns interest.

Zo gebruik je deze rekenmachine

  1. Choose simple or compound interest and enter the starting amount, the yearly rate in % and the time in years.
  2. For compound interest, choose how often interest is added. Money is shown to 2 decimal places.

Uitgewerkt voorbeeld

1000 at 5% a year for 3 years, compounded yearly

r = 5% = 0.05, n = 1 and nt = 3.

A = 1000 × 1.05³ = 1157.625, which rounds to 1157.63.

Interest = 1157.63 − 1000 = 157.63; the effective annual rate is exactly 5%.

Veelgestelde vragen

What is the difference between simple and compound interest?

Simple interest is only paid on the starting amount. Compound interest is also paid on interest already added, so it grows faster.

What is the effective annual rate?

The rate you really earn in a year once compounding is included — also called the APY. Monthly compounding at 5% gives about 5.1162%.