Split a lump sum between spending now and investing, then project the balance.
How to read the results
The invested portion compounds monthly alongside any regular additions.
Lump sum growth calculator
Split a lump sum between spending now and investing, then project the balance.
Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18
$
$
$
6.0%
20 yr
Balance at the end
$165,510
Growth earned
$115,510
- Invested at the start
- $50,000
- Contributed in total
- $50,000
- Cost of spending now
- $32,071
- Multiple of the original sum
- 2.8×
Methodology
The invested portion compounds monthly alongside any regular additions.
- · Return is constant.
- · Ignores tax on gains.
Estimates only. Nothing here is financial advice. Spotted something wrong? Tell us and it gets fixed.