Why ChatGPT Highlights 20% as Starting Retirement Housing Budget
Many retirement rules focus on how much you should save before leaving the workforce. However, once the paychecks stop, another question becomes just as important: How much of your monthly income should go toward keeping a roof over your head?
Housing is often a retiree's largest expense, whether that means paying a mortgage, property taxes, insurance, homeowners’ association (HOA) fees or rent.
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To find out what retirees should realistically spend on housing, I asked ChatGPT for guidance. Its answer wasn't a single percentage, but favored one specific number.
Start With the Traditional Rule
ChatGPT started by drawing from a common rule of financial planning — to spend no more than 25% to 30% of gross income on housing. In retirement, however, that percentage may need to be even smaller, because retirees typically live on fixed incomes.
Retirees also have less flexibility to increase earnings if costs rise. ChatGPT stressed that having predictable monthly expenses are especially important at this stage of life.
Financial Experts Prefer This Number
While 25% to 30% is often cited as the upper limit, ChatGPT suggested retirees try to keep housing costs closer to 20% due to that limited flexibility. For most Americans, housing costs averaged 33.4% of their income in 2025, according to the Bureau of Labor Statistics.
It also stressed that healthcare costs often exceed plans in retirement because many retirees fail to plan for inflation’s impact on their expenses.
Rules aside, at the end of the day, a retiree spending 20% of income on housing is generally in a stronger position than one spending 35%, ChatGPT stressed.
Your Housing Situation Matters More Than Any Rule
The right percentage to spend on housing depends on whether you own your home outright, still have a mortgage or rent, ChatGPT said. Two retirees with identical incomes may have very different housing budgets depending on these factors.
ChatGPT urged retirees still paying on a mortgage to consider getting out from under that loan as quickly as possible. Renters should also plan inflation into their housing costs.
Don't Forget the Hidden Costs of Housing
ChatGPT warned against focusing only on mortgage or rent payments when calculating housing costs. Housing includes numerous expenses that can add up to a surprising share of retirement income, including:
Property taxes
Homeowners insurance
Homeowners Association (HOA) fees
Utilities
Repairs and maintenance
Major capital expenses (roof, HVAC, plumbing)
For example, a retiree with a paid-off home may think housing costs are minimal, only to face a $10,000 roof replacement or rising property taxes, ChatGPT said.
The Best Housing Percentage...
Rather than chasing a perfect number, retirees should focus on balancing housing costs with the rest of their financial priorities, ChatGPT said. A larger housing budget may be reasonable if other expenses are low, while someone who wants to travel extensively may need to spend less on housing.
Retirees also need to consider cash flow instead of just net worth. They also need to think about overall lifestyle considerations — for example, maybe housing costs are slightly higher because there’s excellent and affordable public transportation, or access to greater amenities within walking distance.
Balance Is Best
There is no universal number for every retiree. The right percentage is the one that leaves enough room in the budget to enjoy retirement without constantly worrying about money.
This article was provided by MoneyLion.com for informational purposes only and should not be construed as financial, legal or tax advice. It was created with the assistance of artificial intelligence and reviewed by our editorial team for accuracy. However, AI-generated content may be inaccurate, incomplete or outdated. You should independently verify important information through reliable sources before making any decisions based on this content.
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