Can I still afford my mortgage?

The question most homeowners ask is "can I afford my mortgage?" The more useful question is: "can I still afford my mortgage if something changes?" A personal affordability test runs your housing budget through real-life scenarios — income drops, payment increases, rate resets, emergencies — to find out whether you have enough margin before a problem turns into a missed payment.

Last reviewed: May 2026 · About this site

Start here: your housing payment ratio

Before running scenarios, calculate your baseline ratio. This is the single number that tells you how much room you have.

Formula: Total monthly housing cost ÷ Gross monthly income = Housing ratio

Total housing cost includes: mortgage principal + interest + property taxes + homeowners insurance + HOA fees + mortgage insurance (PMI/MIP) if applicable. Use your total escrow payment — not just the loan portion.

How to run a personal affordability test

Create three versions of your monthly budget: normal, stressed, and urgent. Here is a worked example with real numbers.

If your budget fails under the mild stress scenario, that is a signal to act early — not after you miss a payment. The options available before delinquency are significantly better than those available after.

Scenario 1: income drops

Test what happens if household income falls by 10%, 20%, or 30%. This can happen through job loss, reduced hours, lower commissions, a missed bonus, seasonal slowdown, illness, or a business disruption. If your household has two incomes, also test the complete loss of the smaller income.

Calculate: Take your total housing cost and divide by each reduced income level. If the ratio exceeds 45% at a 20% income drop, your mortgage has very little buffer against normal life disruptions.

If the test shows high risk: contact your servicer now — before the income drops — and ask about proactive hardship options. Some servicers offer early-intervention programs for borrowers who are current but at risk.

Scenario 2: property taxes or insurance increase

Escrow adjustments are one of the most common — and underestimated — sources of mortgage payment shock. Property taxes and homeowners insurance both tend to increase over time, and an escrow shortage can add $100 to $400 per month with very little warning.

Test it: Add $150, $250, and $400 to your current monthly payment. Recalculate your ratio. If a $200 escrow increase breaks your budget, you are already operating at structural risk.

Note: if you are in a high-property-tax state like New Jersey, Illinois, or New York, this scenario deserves extra weight. Property taxes in these states can increase significantly year over year and represent 30–50% of the total monthly housing cost for many homeowners.

Scenario 3: ARM rate reset

If you have an adjustable-rate mortgage, your payment will change at each reset date. The first reset is often the largest. Use your loan documents to find your adjustment caps and margin, then calculate the maximum possible payment after the next reset.

Worst-case calculation: Take your current balance and remaining term. Apply your current rate plus the periodic cap (usually 2%). Calculate the new monthly payment. That is your worst-case reset payment — check whether your budget survives it.

If the worst-case ARM reset pushes you above 40–45% of income, explore refinancing to a fixed rate before the reset date. See our ARM loan reset guide for what options exist and how long you have to act.

Scenario 4: emergency expenses

A realistic affordability test includes the unexpected: car repair, medical bill, appliance failure, roof issue, or a period of supporting a family member. These are not rare events — they are the normal texture of life over a 30-year mortgage term.

Test it: Remove $500 from your monthly available income for one month and see whether the mortgage still gets paid. Then remove $1,000 for three months — a typical medium emergency. If you cannot absorb a $500 monthly disruption while staying current, your emergency fund is the immediate priority.

Scenario 5: one income disappears

For two-income households, the most severe test is what happens if one income stops entirely. This can happen through job loss, serious illness, death, divorce, or a career change. Many homeowners have never calculated whether they could cover the mortgage alone.

The single-income test: Take only the lower of the two incomes and calculate the housing ratio against total housing cost. If the ratio exceeds 50%, the household cannot maintain the mortgage on one income. That is not a moral failing — it is a financial fact that is better to know and plan for than to discover during a crisis.

Warning signs your mortgage is too tight

• The payment only works when everything goes perfectly.
• You rely on overtime, bonuses, or tax refunds to stay current.
• You have no emergency savings after paying monthly bills.
• An escrow increase would make the payment difficult.
• You are avoiding basic expenses or using credit cards to protect the mortgage payment.
• You are current but worried every month before the due date.

One or two of these is a yellow flag. Three or more is a signal to contact your servicer and begin a proactive conversation about your options now — before you reach a point of actual delinquency.

What to do if your affordability test fails

If your budget fails a mild stress scenario, the most important action is early contact with your servicer. Ask specifically: "What hardship assistance options are available for my loan type before I miss a payment?" The answer to that question is very different when you are current versus when you are 60 days late.

A free HUD-approved housing counselor can review your full financial picture, explain which servicer programs apply to your loan type, and help you prepare for the conversation. Find a counselor at hud.gov/housingcounseling.

See our guide on what to do when you can't afford your mortgage for a step-by-step checklist, and our guide on getting help with your mortgage payment for how to approach the servicer conversation.