Ränta-på-ränta-kalkylator
Enter starting principal, annual rate, years and compounding frequency to see the future value and interest earned.
Den här sidan översätter det engelska originalet. Beräkningsmotorn är densamma.
Snabbsvar
It applies compound interest for the frequency you choose and optionally adds regular contributions if the form supports them.
Exempel: 10,000 at 5% compounded annually for 20 years is about 26,533 before tax and fees.
Beräkningarna följer formeln på den här sidan; avrundning och enheter kan ändra sista siffran. Behandla resultatet som en pedagogisk uppskattning.
* Uppskattning. Verkliga belopp kan variera beroende på antaganden.
Vad kalkylatorn gör
It applies compound interest for the frequency you choose and optionally adds regular contributions if the form supports them.
Vem den är till för
Savers and students who want the growth path, not a product recommendation.
Så fungerar beräkningen
Each period the rate is r/n. After nt periods the balance is P(1+r/n)^(nt), plus any contribution schedule on the form.
Formel
A = P(1 + r/n)^(n t)
Antaganden
- The rate stays constant.
- No tax drag unless you model it yourself.
- Deposits occur on the schedule implied by the fields.
Begränsningar
- Not investment advice.
- Inflation and fees are excluded unless you reduce the rate yourself.
Så använder du verktyget
- 1Enter principal and annual rate.
- 2Set years and compounding frequency.
- 3Read future value and interest.
Vanliga frågor
- What is the Rule of 72?
- 72 divided by the annual rate roughly estimates years to double. It is an approximation, not this calculator’s output.
- Daily vs monthly?
- More frequent compounding earns slightly more at the same nominal annual rate.