Finance

Wedding Compound Annual Growth Rate Calculator (20 Years)

Calculate compound annual growth over a period. This wedding version uses a 20-year planning term as its starting point.

In plain terms, this percentage is the steady yearly growth rate that would take the starting value to the ending value over 20 years, smoothing out any uneven growth along the way.

Formula

CAGR equals ending value divided by starting value, to the power of one over years, minus one.

How it works

CAGR smooths growth into a single yearly rate, even if actual yearly growth varied.

Worked example

Starting value $10,000, ending value $20,000, term 20 years. The ending value divided by the starting value is $20,000 divided by $10,000, which is 2. Using the page formula, the compound annual growth rate is 2 to the power of one over 20, minus one, which gives 3.53 percent a year. That is the calculator's own result for these defaults, and it is the same starting and ending values as every page in this group, because the term is the only input that changes: a longer term spreads the same doubling over more years, so the yearly rate falls as the term rises.

Who this term suits for a wedding: a long wedding fund, such as parents saving from a child's early years toward a wedding two decades later, where a low steady rate still doubles the money.

FAQs

What does CAGR mean?
CAGR is the steady yearly growth rate that would take a starting value to an ending value.

Is this wedding calculator exact?
No, it is an estimate for planning only, based on the numbers you enter.

Are these figures financial advice?
No, they are estimates for planning only, not financial advice. Check with a qualified adviser for decisions involving large sums.

Why does doubling over 20 years need only 3.53 percent a year?
Because compounding over 20 years multiplies even a small rate many times. Two to the power of one over 20, minus one, is 3.53 percent a year, which is enough to turn $10,000 into $20,000 across two decades.

Can parents really plan a wedding 20 years ahead on one rate?
Only loosely. A 3.53 percent steady rate is a useful planning figure, but wedding prices, incomes and returns will change over 20 years, so the fund should be reviewed every few years rather than set once and forgotten.

What happens if the fund earns less than 3.53 percent?
Then it will not double in 20 years. At 3 percent a year, $10,000 grows to about $18,061.11 in 20 years, which is $1,938.89 short of the $20,000 wedding target, so extra saving would be needed.

Estimates only, not financial advice. Figures are approximate and do not include all fees, taxes, or changing rates unless stated.