Estimate your payment with our mortgage calculator

Josh Neimark

How Much Housing Mortgage Can You Really Afford?

Understanding how much you can safely spend on a housing mortgage is the first smart move. The more you know about your monthly mortgage payment - and how it's calculated - the better your chances of making confident, informed decisions.


Let’s break it all down and show you how a mortgage calculator can help you budget for the home you deserve.


What’s Included in an Affordable Housing Mortgage Payment?


Most monthly mortgage payments are made up of multiple costs - not just your home loan.


Here's what typically goes into a payment for an affordable housing mortgage:


1. Principal


The amount you borrow from a lender to buy your home.


For example:

If your home costs $400,000 and you have $100,000 saved up for your down payment, you’ll need to borrow $300,000 to complete the purchase.


So,

  • Home price: $400,000
  • Down payment: $100,000


Mortgage principal: $300,000


2. Interest


Interest is the cost of borrowing. It’s a percentage of your loan (like 4.75%).


Several factors affect your mortgage rate:


  • Credit Score: Higher scores = better rates


  • Debt-to-Income Ratio (DTI): The lower your debt-to-income ratio, the better your interest rate. Ideally under 43%
    This is because lenders view a borrower’s stable financial situation as less of a credit risk. 


  • Market Conditions: Treasury yields can impact fixed mortgage rates.

        For example,   the U.S. Treasury Department sells notes, among other products, to fund U.S. debt              (the 10-year Treasury yield is their most popular product). 

Looking for today’s best affordable housing mortgage rates in Texas, Colorado, or Florida? Contact Austin Capital Mortgage.


3. Loan Term


This is how long you agree to repay your mortgage.


Common terms: 15, 20, or 30 years


4. PMI (Private Mortgage Insurance)


If your down payment is under 20%, you’ll usually need PMI.
 

Typical cost: 0.2% - 2% of the loan amount per year.


You can cancel PMI after reaching 20% equity.


FHA loans don’t have PMI but come with other types of mortgage insurance-often more affordable.


5. Property Taxes


Your location and home’s value determine your property tax rate.
Check local websites or listings for exact figures.


6. Homeowners Insurance


It's usually required to get a mortgage. Plans with higher deductibles tend to have lower monthly premiums.


Use This Mortgage Calculator for Affordable Housing Mortgage Planning


Planning for your future home starts with knowing what you can afford.

Want to Calculate Manually?


Here’s the formula lenders use for a fixed-rate loan:


M = P [ (1 + i) ^ n ] / [ (1 + i) ^ n - 1 ]


  • M = Monthly payment (principal + interest)

  • P = Loan amount

  • i = Monthly interest rate (annual ÷ 12)

  • n = Total number of payments (years × 12)

Example:

  • 30-year loan = 360 payments
  • 6.03% annual rate → 0.005025 monthly rate


Don’t forget to add in:



  • PMI
  • Insurance
  • Property taxes
  • HOA fees (if any)

How Much Can You Afford for Housing?


Every borrower is unique. But a solid rule of thumb is to spend no more than 25–30% of your monthly income on housing.


That’s why calculating your affordable housing mortgage early on is so important.


Many families, especially with young children, spend closer to 36% so budgeting ahead is crucial.


Why You Need a Mortgage Calculator

A mortgage calculator helps you:


  • Estimate your monthly mortgage payment
  • Explore what’s truly affordable
  • Compare down payment or interest scenarios

It’s an easy way to understand your financial limits - and avoid surprises down the road.


Can Mortgage Payments Change?


They can - depending on your loan type.


  • Fixed-Rate Mortgage: Monthly payment stays the same for the full term.
  • Adjustable-Rate Mortgage (ARM): Starts lower, then adjusts with the market.

Choose what fits your comfort zone and financial goals.


Let's Talk About Your Affordable Housing Mortgage Options


Whether you’re a first-time home buyer or refinancing an existing loan, Austin Capital Mortgage is here to guide you through your affordable housing mortgage journey.


We offer:

  • Pre-approvals
  • FHA and conventional loans
  • Refinancing and home equity loans

Contact us today to get started and bring your homeownership goals within reach.