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Rent is usually a little more than half of my income (depending on how much I worked each month). But then again, I'm a student working part time.
 
Personally, I have never found percentage guidelines that helpful, since they vary depending on the persons salary. The important thing is to work out a definitive list of outgoings in a month and compare to your incoming salary. You need to build in outgoings for all bills, insurance, internet access, food, travel, contingencies for house repairs & car repairs, general savings, etc. At the end of that process if incoming > outgoing then it works. (However you also need to calculate a 'what if' plan, what if your incoming drastically changed, in a worse case scenario went to zero? Unless you know how you can pay everything off for a year then your outgoings could be too high.)
 
Our mortgage payment (P&I only) is 7.0% of our gross income. The escrow adds another 1.5% to make it 8.5% total.

Personally, I have never found percentage guidelines that helpful, since they vary depending on the persons salary. The important thing is to work out a definitive list of outgoings in a month and compare to your incoming salary. You need to build in outgoings for all bills, insurance, internet access, food, travel, contingencies for house repairs & car repairs, general savings, etc. At the end of that process if incoming > outgoing then it works. (However you also need to calculate a 'what if' plan, what if your incoming drastically changed, in a worse case scenario went to zero? Unless you know how you can pay everything off for a year then your outgoings could be too high.)

People tend to uses percentages for this because a high earner will very likely live in more expensive housing, though it won't be a 1:1 ratio.
 
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