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.
Step 1: Get pre-approved for a mortgage loan. Start the home loan process by applying for a mortgage pre-approval as soon as you decide to start looking for a home to buy.A mortgage pre-approval letter is a great thing to have when shopping for a home. It gives you, and the seller of a property you are interested in, an idea of how much you can spend.tep 1: Get pre-approved for a mortgage loan. Start the home loan process by applying for a mortgage pre-approval as soon as you decide to start looking for a home to buy.