Goal Amount Calculator | How Much to Invest Per Month
share & cite
Share this calculator
Use the query-free canonical URL when citing this calculator from articles or communities.
What can this goal simulator do?
Set a target amount and deadline, then see how your current assets, monthly savings and expected return could get you there.
- Simulate your asset path year by year based on current assets, monthly contributions, expected return and time horizon.
- Compare gross vs net results to see how taxes and fees affect your path.
- Use the chart and table to see whether you fall short or overshoot your goal and experiment with monthly amount or years.
What do you want to solve this time?
Pick the decision variable first, and the result cards will emphasize that lever.
Keep the horizon and return fixed, then solve the required monthly investment.
Premium options
Refine the plan with related calculators
Continue from the goal result into DCA, compounding, and retirement planning.
DCA
Use the DCA simulator for monthly contribution paths
Test monthly contributions, contribution growth, taxes, and fees in a DCA path.
Compound
Compare principal, horizon, and return in the compound calculator
Check whether the required return is realistic in a simpler compounding model.
FIRE
Check whether the target works as a FIRE number
Connect the target amount to spending, withdrawal rate, and retirement runway.
CAGR
Use the CAGR calculator to sense-check annual return
Translate the required return into a start-to-end annualized return check.
Goal asset simulator FAQ
What unit should I use for the input amounts?
If the currency is KRW, use units of 10,000 KRW. For example, 30M KRW should be entered as 3000. If you switch to USD, enter your actual dollar amounts.
Is the target amount before or after tax?
We recommend thinking of your target as an “after-tax” number. When tax and fee options are enabled (and tax/fee rates are set), the simulator computes net values, so it is more intuitive to set your goal based on net assets.
How are tax and fees applied in the simulation?
With tax enabled, we use a default 15.4% interest tax; with fees enabled, we use a default 0.5% annual cost. You can override both percentages in the form. These are simplified assumptions and may not match real products exactly.
What if my target is very high or too aggressive?
If your target is too ambitious for the chosen annual return and time horizon, the net asset line may stay far below the target line. In that case, try adjusting your monthly contribution, extending the horizon, or slightly increasing the assumed return (within realistic bounds).
Why might real investment results differ from this simulator?
The simulator assumes a constant return, fixed monthly contributions, and simplified tax/fee rules. Real-world returns fluctuate, and tax regulations and product structures can change, so regard this tool as a planning aid rather than a prediction.
Recommended guides
View all postscitation
How to cite this calculator
When referencing the method or examples, cite the canonical page with a simple HTML link.
<a href="https://www.finmaphub.com/en/tools/goal-simulator">goal amount calculator</a>Recommended anchor text
- goal amount calculator
- monthly investment calculator
- target portfolio calculator