💡 Tip: Have your bank account info, investment account info, and retirement account info handy! It’d also be helpful to know roughly what your income is today.
1. Who are you doing this doc for? Yourself and your significant other
Combine your info with that of your significant other for the rest of this tool (for example, the following values should all be sums of your accounts and your significant other's accounts). For simplicity, we assume that you file taxes as married filing jointly. If you don't want to make this assumption, you can do this separately as individuals, then sum up the totals.
2. How young are you?
If you're different ages, just choose one of your ages to use as the reference age.
3. How much 💵 do you roughly have?
These should all be in $ USD. Remember that these should be the sums of your accounts and your significant other's accounts. Don't worry, literally no one on this planet has access to the numbers you put in here, including me.
In your bank accounts (savings, checking): In your investment accounts (stocks, RSUs, etc) : In your retirement accounts (401k, IRAs, etc) : 4. How much 💵 do you earn per year today?
This is also in $ USD, and represents your total pre-tax annual income that comes from salary, RSUs, side projects, real estate, etc. Remember that this should be the sum of your income and your significant other's income. By the way, for tax purposes we assume for simplicity that you file married jointly.
Note 1: This does not include long term or short term capital gains from investment accounts. Those will be calculated separately later based on your investment account value.
Note 2: This is pre-tax, and pre-contributions to 401K and/or ESPP/stock plans. Tax is calculated later, as well as 401K contributions. For the sake of simplicity, we’ll treat contributions to ESPP as regular income.
You should include the discount as regular income, so if your income is $1,000 and you take $100 to use for ESPP with a 15% discount, then actually your ESPP portion is worth $100 * (115%) = $115, and your total income is $1115).
This information is just for you to have as reference, it’s all included in the calculations later on!
Your effective tax rate: If taxable income is over
Value of % of amount over
If taxable income is over
Value of % of amount over
5. Calculate your expenses
What are your current expenses?
The best starting point is tabulating up what your expenses are today* using tools like or that categorize automatically your expenditures after you connect your credit card and bank accounts. Input these expenses into the “Monthly Cost (today)” column below. *Today : because of abnormal spending habits due to Covid, I recommend you consider “today” expenses from a period of “normal” time i.e before 2020. For example, what I have here are averages from a 4 month period between March and June 2018 when we lived in an apartment in Cupertino, CA.
Important note: Do not include mortgage, rent, or kid related costs here. You’ll have the ability to apply these automatically later on.
Input your expenses now! Expense category: you can choose how you want to categorize, just be consistent! Monthly Cost (today): how much you spend on that category each month, today Months valid per yr (today): in case there are categories that only apply for part of the year, this column allows you to put in the number of months applicable per year If we only have a pet for 3 months out of the year, for example, we would put the slider at 3 for “Pet Stuff”.
Average Monthly (today): a formula to calculate your average monthly cost Clarifying notes: any notes that help remind you of assumptions you’ve made Months valid per yr (today)
👉 Cool. That was easy, right? Let’s move on to:
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