I plan to geoarbitrage, and live on a fraction of my current income. I will not be able to make my current income when I move from my HCOL area. Not sure why the assumption would be I want to keep all these plates spinning that I have to in an expensive city with a kid in college.

Should read like after tax income (without looking at assumptions this could create poor calculations)

As you increase the Withdrawal rate, the number of years required before you can retire decreases. There must be an error in the math, as that makes no sense at all.

Can you add the month and year of retirement to the output? (In addition to the time until retirement)

HI!

In Canada, the taxes can be deducted if you make a contribution to a RRSP account. This muddies up the easy math of "Net take home pay" because my take home pay includes a tax return AND savings in a RRSP.

Would be nice to sort this out more efficiently. Right now I don't see how?!

I'm sure the ROI calculation is correct, I'm just not fully understanding how you came to the conclusion that you did. If I bring in 20k and can save 50% (with a savings rate of 5%), surey the ROI after the first year is 500 rather than the displayed 250?

The European commission published updated avg. household saving rates you might want to implement in your graphs - The current numbers are from 2008.

(https://ec.europa.eu/info/publications/economy-finance/household-saving-rates-eu-why-do-they-differ-so-much_en)

I am unable to see what currency the Calculator is in?

If I've already saved X, that should be included as generating returns.

as i change the withdrawal percentage [see examples 3% - 7.7, 4% - 4.2, 5% - 1.8, 6% - 0.0] the more i withdraw, the less time i have until retirement??!? how TF does that make sense... unless i am missing something

Stop it from autopopulating

Instead of inputing "Current savings rate" can you input "desired years to retirment" and then it would give you all the figures needed to get that target?

In times of a 2% inflation goal of the European central bank and roughly 0% interest in most places you should allow for a negative interest rate in your formula.
Having a negative interest rate leads to a lot not NaNs and weird diagram.

Since many of us plan on retiring abroad thus greatly reducing our annual expenses (and even if we don't move, many of us do reduce expenses a lot), the calculator should not assume by default that the current expense rate is also the post-retirement expense rate.

Question: Should Current Annual Expenses include the taxes you pay on your paycheck? Your tax rate will go down when you don't have pay check when you retire, so including those taxes seems like over stating the taxes when you are retired.

"fewer" is number, "less" is degree.

just a grammar tweak. not trying to be a jerk, just noticed it.

Please fix it. This site is great!

Income tax typically higher during working years. Where do you put it? Expenses? If so, this over estimates time needed by assuming your expenses including high income tax during working years will be the same in retirement.

I have several sources of income in retirement that do not come from my investment portfolio, including rental income and music royalties. Others might have social security or a pension. With the current retirement calculator I need to reduce my expenses by my additional income to get an accurate number. It would be nice to leave the expenses as your actual expenses and add in the additional income as a line item in the calculation.