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How to Budget for Your First Mortgage

A mortgage payment is one of the biggest commitments you’ll make, and the best time to budget for it is before you start shopping. These steps will help you find a payment that fits comfortably and leaves room for the rest of your life.

Reviewed by Patriot Home Mortgage compliance, October 2026 · 3 min read

Step 1: Start with your income

Add up your household’s monthly take-home pay, the money that actually lands in your account. If you’re buying with a partner, include both incomes, but think about whether the payment would still work if one income changed.

Step 2: List your current costs

Write down everything you already pay each month:

  • Car payments, gas and car insurance
  • Student loans and credit card payments
  • Health insurance and medical costs
  • Childcare
  • Phone, internet and subscriptions
  • Groceries and household supplies

Mark which costs are fixed and which you could reduce if you needed to.

Step 3: Find a comfortable payment

Subtract your current costs from your take-home pay. What’s left has to cover your housing payment, savings and everything else. A common rule of thumb is to keep total housing costs near 28% of your gross income, but your own numbers matter more than the rule. Our guide to how much house you can afford explains how lenders look at it.

Remember that a housing payment includes property taxes, homeowners insurance and, for some loans, mortgage insurance and HOA dues, not just the loan.

Step 4: Plan for the costs renters don’t have

Owning a home comes with costs a landlord used to cover:

  • Repairs and maintenance, from a leaking faucet to a new water heater
  • Utilities, which are often higher in a house than an apartment
  • Yard care, snow removal and pest control
  • Furniture and moving costs

Many homeowners set aside money every month for repairs so a surprise doesn’t become a crisis.

Step 5: Build a cushion

Keep an emergency fund separate from your down payment and closing costs. Some lenders also want to see money left in savings after closing, called reserves. Even a few months of expenses gives you breathing room if work or health changes.

Step 6: Find room to save

If the numbers are tight, look for places to trim before you buy:

  • Cancel subscriptions and memberships you don’t use
  • Cook at home more often
  • Review your phone, internet and insurance plans
  • Avoid new car payments or other new debt while you’re saving

Step 7: Track your spending for a month or two

Budgets work best when they’re based on what you really spend. Track every purchase for at least a month, using a spreadsheet, your bank’s spending tools or a budgeting app.

Then talk to a loan officer. Bring your budget to the conversation. A loan officer can show you loan options and payments that fit the number you’re comfortable with, not just the most you could borrow.

Talk to a Patriot loan officer

Every situation is different, and a short conversation is the quickest way to know what fits yours.

Find a loan officerSee where we lend

This article is general information, not an offer to lend or a commitment to lend. All loans are subject to credit approval, underwriting and property valuation. Belem Servicing LLC, NMLS ID #715386 (NMLS Consumer Access).

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