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Finance
Project how a principal balance grows over time with regular contributions and compounding returns.
The balance each period is the prior balance plus interest earned on that balance, plus any new contribution — compounding means interest itself earns interest in later periods, which is why growth accelerates over long horizons.
This calculator compounds monthly by default, which is standard for most savings and investment accounts.
No — results are shown in nominal dollars. Subtract expected inflation from the return rate for a rough real-return estimate.