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Deposit Amount & Stated APR

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Yrs
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APY (Annual Percentage Yield) Conversion Formula

Transparent mathematical methodology explained in plain English.

APY = (1 + (APR / n))^n - 1 | Future Value = Principal × (1 + (APR / n))^(n × t)

Calculates the real effective annual return earned on deposits when interest compounds n times per year (daily = 365, monthly = 12, quarterly = 4).

Variables Explained:

  • APR (Nominal Rate): Stated annual percentage rate before compounding.
  • n (Compounding Frequency): Number of compounding periods per year (365 daily, 12 monthly).
  • Principal ($): Initial deposit amount invested.
  • t (Years): Total duration deposit earns compound interest.
Real Project Example

Converting 4.75% APR to APY with Daily Compounding on $25,000 over 2 Years

Calculating effective yield and interest earned.

Sample Project Inputs:
Principal:$25,000
Stated APR:4.75%
Compounding:Daily (n = 365)
Duration:2 Years
Step-by-Step Calculation:
  1. Calculate APY: (1 + (0.0475 / 365))^365 - 1 = (1.000130137)^365 - 1 = 4.864% APY.
  2. Future Value Year 1: $25,000 × (1.04864) = $26,216.00.
  3. Future Value Year 2: $26,216.00 × (1.04864) = $27,491.13.
  4. Total Interest Earned: $2,491.13.
Calculated Answer:4.75% APR = 4.86% APY with daily compounding ($2,491.13 interest earned on $25k).
Verified Calculation StandardsE-E-A-T Verified

Formulas calibrated against Standard Compound Amortization Algebraic Models & Truth in Lending (TILA) Formula Standards. Calculations are computed 100% client-side in your browser for absolute data privacy.

Knowledge Base

Häufig gestellte Fragen (FAQ): APY- & Effektivzinsrechner

Click any question below to expand quick answers, formulas, and expert tips.

What is the difference between APR and APY?

APR (Annual Percentage Rate) reflects simple annual interest without considering compounding. APY (Annual Percentage Yield) accounts for how frequently interest is compounded, showing the true effective annual return earned.

Why does daily compounding yield more than monthly compounding?

Daily compounding calculates and adds interest to your balance every single day, so tomorrow's interest is calculated on a slightly higher principal than yesterday's.