What is a retirement income floor?

A retirement income floor is guaranteed income that covers your essential, non-discretionary monthly expenses — housing, food, healthcare, utilities, and insurance. Sources that can create a floor include Social Security, a pension, and/or income annuities (SPIA). When your floor is in place, you no longer rely on investment portfolio withdrawals for survival — your portfolio then only needs to fund your discretionary, flexible spending.

How much guaranteed income do I need to retire securely?

You need enough guaranteed income to cover your essential monthly expenses. Calculate your true essential monthly expenses (not including dining out, travel, entertainment), then compare to your guaranteed income. If Social Security plus any pension covers those expenses, you have your floor. If there is a gap, you can fill it by: delaying Social Security to increase benefits, purchasing a SPIA annuity, or generating rental income. The goal is that your baseline lifestyle never depends on whether markets are up or down.

What is the flooring approach to retirement?

The flooring approach, championed by economist Zvi Bodie, separates retirement spending into two tiers: a guaranteed 'floor' funded by Social Security, pensions, and annuities for essential expenses; and an 'upside' portfolio funded by market investments for discretionary spending. Unlike pure portfolio-withdrawal approaches, the flooring approach eliminates the risk of markets destroying your essential lifestyle in retirement.

Retirement Income Floor: How to Guarantee Your Essential Expenses Are Covered

The central insight behind the retirement income floor: when essential expenses are covered by guaranteed income that cannot run out, market volatility stops being an existential threat. Your portfolio becomes a tool for enhancing life — not a life raft.

Essential vs. Discretionary Retirement Expenses

The first step is separating what you must pay from what you choose to pay:

Essential (Must Have)	Discretionary (Want to Have)
Mortgage or rent	Travel and vacations
Property taxes, insurance	Dining out frequently
Utilities (electric, water, gas, internet)	Entertainment subscriptions
Groceries (basic)	Home renovations beyond maintenance
Healthcare premiums (Medicare, supplement)	Gifts and charitable giving
Car payment and basic transportation	Club memberships
Minimum monthly medications	Hobbies and activities
Basic home maintenance	Second home expenses

Your floor target: The total monthly cost of the Essential column.

Sources That Can Build a Retirement Income Floor

Source	How It Creates a Floor	Reliability
Social Security	Lifetime monthly payments; COLA-adjusted yearly	Federal guarantee; highest reliability
Pension (defined benefit)	Monthly payments for life	High — risk is plan insolvency (rare for major pensions)
Single Premium Immediate Annuity (SPIA)	Convert lump sum to guaranteed lifetime income	Insurance-backed; varies by insurer credit rating
Qualifying Longevity Annuity Contract (QLAC)	Income starts at 80-85; defer for very late life	Insurance-backed; protects against living too long
Rental income	Monthly rent from property	Moderate — not guaranteed, but relatively stable

What does NOT create a floor: Stock dividends, bond interest, or portfolio withdrawals — these can all decline or disappear in adverse conditions.

Building Your Floor: Step-by-Step

Step 1: Calculate your essential monthly expenses

Category	Monthly Amount
Housing (rent/mortgage/taxes/insurance)	$_______
Utilities	$_______
Groceries (basic)	$_______
Transportation	$_______
Healthcare premiums + typical out-of-pocket	$_______
Medications	$_______
Minimum home maintenance reserve	$_______
Total Essential Monthly	$_______

Step 2: Identify current guaranteed income

Source	Monthly Amount
Social Security (your benefit)	$_______
Social Security (spouse’s benefit)	$_______
Pension	$_______
Annuity payments	$_______
Total Guaranteed Monthly	$_______

Step 3: Calculate the gap

Floor gap = Essential Monthly – Guaranteed Monthly

Gap Size	Action Required
Negative (guaranteed > essential)	Floor is complete — use portfolio for discretionary only
$0-$500/month gap	Small — may be filled by delaying Social Security 1-2 years
$500-$1,000/month gap	Delay SS to 70 and/or consider a small SPIA purchase
$1,000-$2,000/month gap	Significant SPIA purchase or rental income source needed
$2,000+/month gap	Reassess essential expenses; consider downsizing, relocation

How Much Annuity to Fill a Gap

SPIA (Single Premium Immediate Annuity) rates as of 2026:

Monthly Income Needed	Age 65 Purchase Price (approx)	Age 70 Purchase Price (approx)
$500/month	~$90,000-$100,000	~$72,000-$80,000
$750/month	~$135,000-$150,000	~$108,000-$120,000
$1,000/month	~$180,000-$200,000	~$144,000-$160,000
$1,500/month	~$270,000-$300,000	~$216,000-$240,000
$2,000/month	~$360,000-$400,000	~$288,000-$320,000

Rates vary by insurer, market conditions, and life expectancy factors. Request quotes from multiple insurers.

SPIA note: Payments continue for life. If you purchase a $200,000 SPIA and live 25 years, you receive far more than you put in. If you live only 7 years, you receive less. Adding a period certain (e.g. “20-year certain”) guarantees at least 20 years of payments regardless of when you die.

For most people without pensions, the easiest way to increase your income floor is to delay Social Security claiming.

Claiming Age	Monthly Benefit (Average Earner)	Annual Benefit
62	$1,335	$16,020
65	$1,640	$19,680
67 (FRA)	$1,907	$22,884
70	$2,365	$28,380

Delay value: Waiting from 62 to 70 adds $1,030/month to your lifetime guaranteed income — permanently, COLA-adjusted. For couples, delaying the higher earner’s benefit also maximizes the survivor benefit.

The Floor + Portfolio Approach in Practice

Month	Essential Expenses	Guaranteed Income	Gap = Portfolio Need
Without floor	$4,500	$2,000 (SS only)	$2,500 from portfolio
With full floor	$4,500	$4,500 (SS + pension/annuity)	$0
Discretionary	$1,500	$0	$1,500 from portfolio

Result: When the floor covers all essential expenses, your portfolio only needs to fund $1,500/month in discretionary spending — a far lower and more sustainable withdrawal rate. If markets drop, you simply spend less on discretionary items.

Floor vs. No Floor: Market Downturn Impact

Scenario: Markets drop 30% in Year 2 of retirement. Monthly spending need: $5,500.

Situation	Without Floor	With Floor
Guaranteed income covering essentials	$0	$4,200
Monthly portfolio withdrawal required	$5,500	$1,300
As % of (down) portfolio	8.8% withdrawal rate	2.1% withdrawal rate
Risk of permanent portfolio damage	High	Low
Psychological stress	Very high	Low

The floor transforms a potential catastrophe (8.8% withdrawal in a bear market) into a manageable situation.

When You Cannot Build a Complete Floor

Not everyone can fully fund an income floor — especially if Social Security is the only guaranteed source and essential expenses exceed that benefit. In that case:

Partial Floor Strategy	Description
Prioritize Social Security optimization	Delaying to 70 adds ~40% to benefits — this is the highest-value move
Reduce essential expenses	Downsize before retirement; pay off mortgage; relocate to lower COL
Convert a portion of portfolio to SPIA	Even covering 50% of the gap improves stability significantly
Add a “near-floor” from bonds	A bond ladder (2-year TIPS ladder) provides stable near-term income
Accept partial sequence-of-returns risk	Use conservative withdrawal rates (3-3.5%) to compensate

Bottom Line

A retirement income floor does not require a pension or extraordinary wealth. It requires: optimizing Social Security claiming (delaying if possible), potentially purchasing a small income annuity, and building your spending plan around the gap. When essentials are covered, the emotional and financial pressure of retirement investing changes fundamentally — your portfolio is then truly for your lifestyle, not your survival.