Before diving into mortgage numbers and ratios, it’s important to understand the broader question: How much of your income should realistically go toward housing? While personal comfort levels and financial circumstances vary, many homebuyers—and lenders—rely on tried-and-true guidelines to strike the right balance between affordability and financial security. One of the most widely used tools is the 28/36 rule.
The 28/36 Rule: A Time-Tested Benchmark
The 28/36 rule is a traditional financial planning guideline used to help borrowers determine how much of their monthly income should go toward housing and debt payments.
- 28% Front-End Ratio: This is the portion of your gross monthly income that should be put toward housing expenses. These include your mortgage principal and interest, property taxes, homeowners insurance, and—if applicable—HOA dues.
- 36% Back-End Ratio: This encompasses all your monthly debt obligations, including your housing expenses, car loans, student loans, credit card payments, and other monthly debt payments.
For example, if your gross monthly income is $7,000, ideally:
- No more than $1,960 (28%) should go toward housing expenses.
- No more than $2,520 (36%) should go toward total monthly debt payments.
While these numbers provide a solid baseline, they’re not set in stone—especially if you’re working with a lender like Revix that considers a more complete financial picture.
How Lenders Use DTI to Determine Mortgage Eligibility
Your debt-to-income ratio (DTI) is one of the most important metrics lenders use to assess how much you can borrow for a mortgage.
- Front-End DTI: Includes only housing-related costs like your future mortgage payment, taxes, and insurance.
- Back-End DTI: Includes all monthly obligations, such as student loans, credit cards, and auto loans.
Revix allows for a maximum DTI ratio of 45%–50% based on your credit profile, financial reserves, and overall borrower strength. This gives you more buying power if your financial profile supports it.
Real-World Examples to Help You Budget
Let’s say you earn $6,000 a month before taxes. Following the 28/36 rule:
- 28% Front-End: $1,680 per month toward housing expenses.
- 36% Back-End: $2,160 per month toward total debts.
If your total non-housing monthly debts (car, student loans, credit cards) are $600, you could afford up to $1,560 per month in housing expenses and still stay within the 36% guideline.
Now let’s look at a Revix-approved borrower with excellent credit and minimal debt, allowed a 50% DTI:
- $6,000 gross monthly income = up to $3,000 for total monthly debts.
- If they have only $500 in non-housing debt, that leaves $2,500 per month available for a mortgage.
These examples show how flexible affordability can be when factoring in your full financial picture.
Factors That Influence Mortgage Affordability
Several personal and market-related factors can shift what percentage of your income should go toward a mortgage:
- Income Stability: Consistent income makes lenders more confident in your ability to repay a loan, potentially improving your approval chances and lowering your interest rate.
- Credit Score: Higher scores usually qualify for better interest rates. A better rate reduces your monthly mortgage payment, allowing a larger loan with the same income.
- Down Payment Amount: The more you put down, the smaller your loan—and the lower your monthly payment. A 20% down payment also removes the need for private mortgage insurance (PMI).
- Interest Rate Environment: Higher rates mean higher monthly payments, which can reduce how much house you can afford. Locking in a lower rate improves your borrowing power.
- Loan Term: A 30-year loan has lower monthly payments than a 15-year loan, though you’ll pay more interest over time.
- Location and Taxes: Property taxes and insurance vary significantly by location and affect your monthly housing expense. Be sure to include these in your affordability estimates.
How Revix Helps You Determine What You Can Afford
At Revix, we don’t believe in one-size-fits-all formulas. Instead, we work with you to build a personalized affordability profile based on:
- Your total monthly income.
- Current and projected monthly debts.
- Credit score and financial reserves.
- Market rates and property tax costs in your area.
By evaluating your full financial picture, we can offer more flexibility in determining how much of your income can responsibly go toward a mortgage.
FAQs: How Much of My Income Should Go Toward a Mortgage?
1. What if I exceed the 28/36 rule?
You may still qualify for a mortgage. Many lenders—including Revix—offer flexibility up to a 50% DTI if your credit and financial profile are strong.
2. How much mortgage can I afford on a $75,000 salary?
Using a 36% back-end DTI, your max monthly debts should be around $2,250. If you have $500 in non-housing debt, you could reasonably afford a mortgage payment of about $1,750 a month.
3. Is it okay to stretch beyond the guidelines?
That depends on your budget. If you have minimal other expenses and a stable income, exceeding the 28% housing threshold may still be manageable, but it’s important to factor in lifestyle costs, savings goals, and emergencies.
4. Can my DTI impact my interest rate?
Yes. Higher DTI ratios may lead to higher interest rates, especially on conventional loans. Revix evaluates your DTI alongside your credit, reserves, and income to ensure fair pricing.
5. What other costs should I include in my mortgage budget?
Don’t forget about homeowners insurance, property taxes, PMI (if applicable), and HOA dues. These costs can significantly raise your monthly housing expense.
Your Path to Smart, Sustainable Homeownership
Determining how much of your income should go to your mortgage isn’t just about passing a lender’s checklist—it’s about setting yourself up for financial stability. Use guidelines like the 28/36 rule as a starting point, but consider your full financial profile, goals, and lifestyle.
Ready to figure out what fits your budget? Get pre-qualified with Revix today and let’s build your path to confident homeownership.
