How much does $10,000 earn at 5% APY with daily compounding for 30 years?

$10,000 at a fixed 5% effective annual yield grows to $43,219 over 30 years, earning $33,219. Because APY already reflects compounding, its equivalent daily rate reproduces 5% APY rather than increasing it again.

For effective APY a = 0.0500, the equivalent daily rate is d = (1 + a)^(1/365) − 1 = 0.00013368. Then A = P × (1 + d)^(365 × t) = P × (1 + a)^t. For P = $10,000 and t = 30, the projected balance is $43,219.

Is 5% APY realistic in 2026?

Compare 5% 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

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

Grows to $43,219. You earn $33,219 in interest at an effective APY of 5%.

Final balance

$43,219

Interest earned

$33,219

Effective APY

Quick context

Illustrative long-horizon scenario; a savings APY is unlikely to remain constant for 30 years.

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 = $10,000          (principal)
  APY = 0.0500          (effective annual yield as decimal)
  n = 365                  (compounding periods per year — daily)
  t = 30                   (years)

Equivalent daily rate d = (1 + APY)^(1/365) − 1 = 0.00013368

Final balance = $10,000 × (1 + 0.00013368)^10950
              = $43,219

Interest earned = $43,219 − $10,000 = $33,219
Effective APY = (1 + 0.00013368)^365 − 1 = 5%

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	$500	$10,500
2	$525	$11,025
3	$551	$11,576
… 24 more years …
28	$1,867	$39,201
29	$1,960	$41,161
30	$2,058	$43,219

Related daily-compound scenarios

$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%)

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

→ $10,500 (1 year 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.