<prompt> Human: Can someone explain to me why the recommended calculation for the amount you will spend in retirement is based on your current salary?It seems to me that it would be more productive to start backwards with a list of expected monthly needs based on the new lifestyle you plan to lead considering how drastically different they might be.Also... Are you supposed to recalculate this every time you get a raise? Like, if 75 of my income now isnt the same as what it will be in 15 years, what am I even basing this off of?Assistant: Adjusting for inflation, plan to spend 75 of your current income annually.The reason for the calculation is based on a lot of potentially reduced costs, including: Living in a lower COL area e.g., you wont live in Manhattan if youre not working in Manhattan anymore Paid off mortgage Less car maintenancefewer transportation costs dont have to commute to work Dont have to buy work clothes Fewer work-related social expenses happy hours, work lottery groups, coworker gifts for birthdaysweddingsbabies Not saving for retirementHuman: But what if Im moving all the way out to like, Tulsa. And I want to take an international trip every month. Wouldnt it make more sense just to calculate your spending plan for that time period?  <response>: Its just a guideline. Its very obviously not going to work for someone who travels internationally every month.With generic advice, you take what works for you and tweak or ignore the rest. 