Debt-to-income ratio (DTI) equals required monthly debt payments divided by gross monthly income, multiplied by 100. If required debts total $2,000 per month and gross income is $6,000 per month, DTI is 33.33%. The ratio is a screening measure, not an approval promise, because each lender and loan program applies its own rules.
how to calculate debt to income ratio: the measured relationship
Debt-to-income ratio is the percentage of gross monthly income represented by required monthly debt payments. DTI measures payment obligations against income. Credit utilization instead compares card balances with card limits, so a borrower can have a modest DTI and a high utilization ratio at the same time.
| Monthly debt payments | $2,000 |
|---|---|
| Gross monthly income | $6,000 |
| DTI | 33.33% |
| Formula unit | monthly dollars ÷ monthly dollars |
how to calculate debt to income ratio: a worked dollar case
List a $1,500 housing payment, $100 auto-loan payment, and $400 of other required monthly debt. The total is $2,000. Divide $2,000 by $6,000 of income before tax withholding: 0.3333, or 33.33%. Adding a proposed $500 housing payment would make the modeled total $2,500 and the modeled DTI 41.67%, provided every input uses the same monthly period.
how to calculate debt to income ratio: calculation method
DTI = total required monthly debt payments ÷ gross monthly income × 100. Gross income means income before taxes and other deductions for this calculation; net pay is a different denominator and produces a different percentage.
incomeledger related calculations: loan payment scenario; paycheck estimate; amortization schedule.
Audit the How to calculate your debt-to-income ratio (DTI) scenario
incomeledger timing check. Record Monthly debt payments as $2,000. incomeledger timing review changes Gross monthly income to $6,000 and keeps the unit beside the figure. A incomeledger timing comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger cash-flow check. Record Gross monthly income as $6,000. incomeledger cash-flow review changes DTI to 33.33% and keeps the unit beside the figure. A incomeledger cash-flow comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger rate check. Record DTI as 33.33%. incomeledger rate review changes Formula unit to monthly dollars ÷ monthly dollars and keeps the unit beside the figure. A incomeledger rate comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger balance check. Record Formula unit as monthly dollars ÷ monthly dollars. incomeledger balance review changes Monthly debt payments to $2,000 and keeps the unit beside the figure. A incomeledger balance comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger disclosure check. Record Monthly debt payments as $2,000. incomeledger disclosure review changes Gross monthly income to $6,000 and keeps the unit beside the figure. A incomeledger disclosure comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger schedule check. Record Gross monthly income as $6,000. incomeledger schedule review changes DTI to 33.33% and keeps the unit beside the figure. A incomeledger schedule comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger threshold check. Record DTI as 33.33%. incomeledger threshold review changes Formula unit to monthly dollars ÷ monthly dollars and keeps the unit beside the figure. A incomeledger threshold comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger payment check. Record Formula unit as monthly dollars ÷ monthly dollars. incomeledger payment review changes Monthly debt payments to $2,000 and keeps the unit beside the figure. A incomeledger payment comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger property check. Record Monthly debt payments as $2,000. incomeledger property review changes Gross monthly income to $6,000 and keeps the unit beside the figure. A incomeledger property comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger income check. Record Gross monthly income as $6,000. incomeledger income review changes DTI to 33.33% and keeps the unit beside the figure. A incomeledger income comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger insurance check. Record DTI as 33.33%. incomeledger insurance review changes Formula unit to monthly dollars ÷ monthly dollars and keeps the unit beside the figure. A incomeledger insurance comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
incomeledger term check. Record Formula unit as monthly dollars ÷ monthly dollars. incomeledger term review changes Monthly debt payments to $2,000 and keeps the unit beside the figure. A incomeledger term comparison recalculates the stated relationship from those two dated inputs, instead of reusing a rounded intermediate amount.
Keep a decision record
incomeledger timing record. The incomeledger worksheet pairs DTI (33.33%) with Formula unit (monthly dollars ÷ monthly dollars). A incomeledger timing decision tests the effect of that pair before adding another assumption. Keep the incomeledger timing source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger cash-flow record. The incomeledger worksheet pairs Formula unit (monthly dollars ÷ monthly dollars) with Monthly debt payments ($2,000). A incomeledger cash-flow decision tests the effect of that pair before adding another assumption. Keep the incomeledger cash-flow source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger rate record. The incomeledger worksheet pairs Monthly debt payments ($2,000) with Gross monthly income ($6,000). A incomeledger rate decision tests the effect of that pair before adding another assumption. Keep the incomeledger rate source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger balance record. The incomeledger worksheet pairs Gross monthly income ($6,000) with DTI (33.33%). A incomeledger balance decision tests the effect of that pair before adding another assumption. Keep the incomeledger balance source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger disclosure record. The incomeledger worksheet pairs DTI (33.33%) with Formula unit (monthly dollars ÷ monthly dollars). A incomeledger disclosure decision tests the effect of that pair before adding another assumption. Keep the incomeledger disclosure source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger schedule record. The incomeledger worksheet pairs Formula unit (monthly dollars ÷ monthly dollars) with Monthly debt payments ($2,000). A incomeledger schedule decision tests the effect of that pair before adding another assumption. Keep the incomeledger schedule source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger threshold record. The incomeledger worksheet pairs Monthly debt payments ($2,000) with Gross monthly income ($6,000). A incomeledger threshold decision tests the effect of that pair before adding another assumption. Keep the incomeledger threshold source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger payment record. The incomeledger worksheet pairs Gross monthly income ($6,000) with DTI (33.33%). A incomeledger payment decision tests the effect of that pair before adding another assumption. Keep the incomeledger payment source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger property record. The incomeledger worksheet pairs DTI (33.33%) with Formula unit (monthly dollars ÷ monthly dollars). A incomeledger property decision tests the effect of that pair before adding another assumption. Keep the incomeledger property source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger income record. The incomeledger worksheet pairs Formula unit (monthly dollars ÷ monthly dollars) with Monthly debt payments ($2,000). A incomeledger income decision tests the effect of that pair before adding another assumption. Keep the incomeledger income source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger insurance record. The incomeledger worksheet pairs Monthly debt payments ($2,000) with Gross monthly income ($6,000). A incomeledger insurance decision tests the effect of that pair before adding another assumption. Keep the incomeledger insurance source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
incomeledger term record. The incomeledger worksheet pairs Gross monthly income ($6,000) with DTI (33.33%). A incomeledger term decision tests the effect of that pair before adding another assumption. Keep the incomeledger term source document with the result, because a revised statement, disclosure, assessment, or account term changes the input rather than the arithmetic.
Common mistakes in How to calculate your debt-to-income ratio (DTI)
Do not put an entire $20,000 auto balance in the numerator; the formula uses its required monthly payment. Do not divide by take-home pay if the question is a lender-style gross DTI. Leaving out a required student-loan, support, or housing payment can make a precise-looking percentage misleading.
Where this calculation stops
The ratio cannot decide which income a lender will count, whether overtime continues, what debt is reportable, or what limit applies to an individual product. It also says nothing by itself about emergency savings, property condition, interest-rate risk, or the actual cash left after bills.
how to calculate debt to income ratio: source check
The Consumer Financial Protection Bureau gives the same definition and a $2,000 monthly-debt, $6,000 gross-income example, while noting that limits vary by lender and product. Read the named source. The incomeledger record should be reconciled to the disclosure, statement, tax bill, or agreement that governs that exact transaction.
how to calculate debt to income ratio: using the output
The incomeledger output keeps each input's named unit and date adjacent to the result. Update the incomeledger scenario when its rate, balance, payment, or property value changes.