As you think about applying for a home loan, you need to consider your personal finances. How much you earn versus how much you owe will likely determine how much a lender will allow you to borrow.
First, determine your gross monthly income. This will include any regular and recurring income that you can document. Unfortunately, if you can't document the income or it doesn't show up on your tax return, then you can't use it to qualify for a loan. However, you can use unearned sources of income such as alimony or lottery payoffs. And if you own income-producing assets such as real estate or stocks, the income from those can be estimated and used in this calculation. If you have questions about your specific situation, any good loan officer can review the rules.
Next, calculate your monthly debt load. This includes all monthly debt obligations like credit cards, installment loans, car loans, personal debts or any other ongoing monthly obligation like alimony or child support. If it is revolving debt like a credit card, use the minimum monthly payment for this calculation. If it is installment debt, use the current monthly payment to calculate your debt load. And you don't have to consider a debt at all if it is scheduled to be paid off in less than six months. Add all this up and it is a figure we'll call your monthly debt service.
In a nutshell, most lenders don't want you to take out a loan that will overload your ability to repay everybody you owe. Although every lender has slightly different formulas, here is a rough idea of how they look at the numbers.
