What Does Waiting a Few Years Actually Cost?
See how much money you lose by delaying investing, saving, or starting — compound interest doesn't wait for you.
How the math works
We ran $500/month at a 7% return, comparing starting now against starting exactly 1 year later, both ending at the same 30-year mark. Starting now reaches roughly $610,000; delaying 1 year reaches roughly $563,000 — a gap of about $47,000 (~7.7%), from just 12 months of delay. The 12 missed contributions ($6,000 total) account for only a modest share of that gap; the rest is the compounding those contributions never got to do — the delay shifts the entire remaining schedule's growth window back by a full year.
The delay's cost is disproportionate to its length, not proportional — which is why the gap grows faster than linearly the longer the delay runs.
Where this doesn't apply
- 7% is a commonly cited historical assumption, not a guaranteed return.
- A deliberate, bounded delay for a genuinely good reason (building an emergency fund first) is a different decision than open-ended postponement.
- This models one isolated financial scenario — the underlying "delay compounds disproportionately" logic applies conceptually elsewhere (skills, habits) without the same precise dollar math.