There is also a three-digit code number assigned to each currency, in the same manner as there is also a three-digit code number assigned to each country as part of ISO 3166. This numeric code is usually the same as the ISO 3166-1 numeric code.
This calculator uses these guidelines for determining how much house you can afford, which are similar to common underwriting criteria that mortgage lenders use. 1  Your total mortgage payment should be no more than 28 percent of your gross monthly income.
Your lender doesn't know about that, so the $1,400 mortgage it says you qualify for today may not fit your actual budget in five years -- particularly if you don't see your income increasing too much over that period. Take a look at this calculator to see how much house you can afford based on your current income. In general, it's more difficult to qualify for a mortgage now than it was during the housing boom, when just about any motivated homebuyer could find credit -- even many who couldn't afford to buy a house.