How much does $25,000 earn at 4% APY with daily compounding for 3 years?

$25,000 at a fixed 4% effective annual yield grows to $28,122 over 3 years, earning $3,122. Because APY already reflects compounding, its equivalent daily rate reproduces 4% APY rather than increasing it again.

For effective APY a = 0.0400, the equivalent daily rate is d = (1 + a)^(1/365) − 1 = 0.00010746. Then A = P × (1 + d)^(365 × t) = P × (1 + a)^t. For P = $25,000 and t = 3, the projected balance is $28,122.

Is 4% APY realistic in 2026?

Compare 4% with the current provider APY and account terms. A HYSA rate is variable, while a CD rate generally applies for its stated term; review the live disclosure before committing cash.

Does daily compounding actually matter vs monthly?

This scenario starts with a quoted APY, which already reflects the account rate and compounding frequency. Converting it to an equivalent daily rate preserves the same annual yield; it does not add a second compounding uplift. To compare frequencies, start with the same nominal APR and calculate the effective APY for each frequency.

Daily compound scenario · Verified 2026-10-12

$25,000 at 4% APY daily compound for 3 years

Grows to $28,122. You earn $3,122 in interest at an effective APY of 4%.

Final balance

$28,122

Interest earned

$3,122

Effective APY

Quick context

Illustrative three-year CD or savings scenario at a stated 4% APY.

How this number was calculated

The input is an effective annual percentage yield (APY). The equivalent daily rate preserves that annual yield over 365 periods:

A = P × (1 + APY)^t

where:
  P = $25,000          (principal)
  APY = 0.0400          (effective annual yield as decimal)
  n = 365                  (compounding periods per year — daily)
  t = 3                   (years)

Equivalent daily rate d = (1 + APY)^(1/365) − 1 = 0.00010746

Final balance = $25,000 × (1 + 0.00010746)^1095
              = $28,122

Interest earned = $28,122 − $25,000 = $3,122
Effective APY = (1 + 0.00010746)^365 − 1 = 4%

The CFPB defines APY as a rate reflecting both the interest rate and compounding frequency over a 365-day period. This projection holds the stated APY constant and converts it to an equivalent daily rate; actual account day-count and crediting terms can differ. See the CFPB's Regulation DD APY definition. Want to run a different combination? Open the full calculator.

Year-by-year breakdown

Year	Interest earned	Year-end balance
1	$1,000	$26,000
2	$1,040	$27,040
3	$1,082	$28,122

Related daily-compound scenarios

$10,000 at 5% APY daily compound for 30 years

→ $43,219 (30 years at 5%)

$1,000 at 5% APY daily compound for 1 year

→ $1,050 (1 year at 5%)

$1,000 at 5% APY daily compound for 10 years

→ $1,629 (10 years at 5%)

$5,000 at 5% APY daily compound for 5 years

→ $6,381 (5 years at 5%)

Try different inputs

Full daily compound interest calculator

Change principal, APY, or years to model your exact HYSA, CD, or money market scenario. Visual chart and year-by-year breakdown included.

Open the calculator →

Educational tool. APY rates fluctuate with Federal Reserve policy and the rate environment; verify the current rate at your bank's product page before relying on this projection. Past rates do not guarantee future rates. Verified 2026-10-12.