Plan with numbers, not vibes
See what consistency can become.
A compound-growth calculator for long-term goals. No account, no sales pitch, no investment advice cosplaying as wisdom.
Projected value
$0
The long view
Year by year
| Year | Contributed | Value |
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Useful, not magical.
Returns bounce around. Inflation, fees, taxes, and timing all take their cut. This shows the math of your assumptions — not a prediction or a shopping list.
The household’s $50 retirement contribution
From the fictional $4,200 monthly budget, the household sets aside $50 a month for retirement, separate from its emergency and bill reserves. Load that scenario: $0 start, $50/month, monthly compounding, age 35 to 60, 5% assumed annual return, and 2.5% inflation. The model gives about $29,775 nominal: $15,000 contributed plus about $14,775 modeled growth, or about $16,061 in today’s dollars under that inflation assumption.
At 0% return the contributions total $15,000. The gap is a sensitivity check, not a retirement target or a promise. The model assumes smooth returns and end-of-month contributions; real returns fluctuate and can be negative, and fees and taxes are excluded. Consider the goal-placement questions before choosing a real account or investment.
Want to compare starting earlier? Try the same $50/month from age 23 at an assumed 10% return through age 60, with inflation adjustment off: about $232,991 nominal from $22,200 contributed. That larger figure reflects both more years and a higher assumed rate; it is not directly comparable with the age-35, 5% result in today’s dollars.
What if the contribution grows to about $50 a week?
Load a separate $217/month illustration (roughly $50 a week): starting at $0, age 23 through 60, with monthly compounding and an assumed 10% annual return. The model shows about $1.01 million nominal from $96,348 contributed. This is a larger contribution than the household’s $50/month retirement line; the budget does not fund it. At 0% return, only those contributions remain.
Inflation adjustment is off in this comparison, so the figure is in future dollars, not today’s purchasing power. A smooth 10% each year is a mathematical assumption, not a market forecast; real returns vary, can be negative, and fees and taxes reduce the result. Change the rate and inflation inputs to see how sensitive the projection is.