How it works
Inflation compounds each year, so prices rise faster over long periods than a simple multiplication suggests. The same logic shows how much less today's money will buy later.
Formula
Future cost = Amount × (1 + i)ᵗ Future buying power = Amount ÷ (1 + i)ᵗ
Example
At 3% average inflation, $1,000 of goods today will cost about $1,344 in 10 years.
Assumptions & limitations
- A constant rate of return or inflation every year.
- Excludes fees and taxes unless entered.
- Contributions are made regularly and on time.
Frequently asked questions
What is a normal inflation rate?
The US Federal Reserve targets about 2% per year over the long run, though actual inflation varies.