Debt to Income ratio compares an individual’s monthly debt payment to their monthly gross income. Your gross income does not include taxes and other deductions. In other words, the debt- to income ratio measures the amount of income generation by a person or an organization in order to service debt.
To calculate DTI, all you need to have is a firm grasp of numbers. The formula, so closest to keeping track of your loans, can be experimented with as follows-

For instance- Supposing your monthly payments are as follows: $1,200 for your mortgage, $400 for your car, $400 for the rest of your credit card debts each month. In order to calculate your gross monthly debt payments, you need to add $1,200 + $400 + $400 which totals to $2,000. If your gross monthly income is $5,600, then your debt-to-income ratio will be based upon dividing your debt ($2.000) by your gross monthly income, ($5,600) which comes to .357% debt to income ratio.
While applying for a mortgage, the lender will take into consideration your finances, which includes your credit flows, gross monthly income and how much money is in store for a down payment. And that is where the debt-to-income ratio comes to play because the lender will be interested in knowing how much you can afford for a house.
Lenders look for a front end DTI (P.I.T.I.) debt-to-income ratio, preferably smaller than 36%. However, in most cases, a bad end ration (including Installment debt, revolving debt to income ratio of 43%. WGB Loans offer the best interest rates available with DTI’s up to 50%.