Building a real, local number for what retirement costs — and what "the gap" actually means.
Stage: Run & Protect denominator → Cross & Convert when the ZIP or the healthcare line jumps. Build: same basket math when you first pick a city.
Every year someone shows me a national “you need X dollars a year to retire” article and asks if they’re fine.
Technically, the article has a number. Incomplete.
Lifestyle need isn’t a national average. It’s a ZIP code with a property-tax bill, a specialist network, a grocery basket that matches how you actually eat, and a healthcare line that jumps when employer coverage ends. The number on the magazine cover doesn’t know your county. Your retirement plan has to.
Cost of living is the denominator. Income sources are numerators. Gap math from an earlier chapter only works if the denominator is honest — local, itemized, and willing to change when you move, downsize, snowbird, or cross into Medicare.
Cost of living (COL) here means the cash your household actually needs to fund the life you’re planning — must-pay, flexible, and healthcare — priced where you will live, not where a national survey averaged everyone.
It is not:
A single “replacement rate” percentage of your old paycheck The median U.S. retiree spend from a headline study Your current take-home pay with the mortgage still on autopilot and employer premiums still subsidized
It is a basket. Housing. Taxes. Healthcare. Food. Transport. Insurance you pay yourself. The flexible stuff you refuse to give up. Add them in today’s dollars where you’ll actually spend them. Then ask which lines inflate faster than a generic CPI
story.
People reverse the order constantly. They start with a portfolio balance and ask what lifestyle it “supports.” That question hides the geography.
Two households with the same 401(k) balance can have opposite answers because:
One owns a paid-off house in a moderate property-tax county; the other rents in a high-cost metro One state’s income tax on Social Security and retirement distributions is light; another’s is not — LOOK UP, don’t memorize a ranking list as gospel One household’s drugs and specialists are routine; the other’s are specialty-tier and travel-heavy One couple plans to stay put; the other plans six months North / six months South without pricing either ZIP’s healthcare and housing stack
If the denominator is wrong, every claiming age debate and every withdrawal rule is theater.
Broker view, plain: popular calculators often spit one success probability or one savings target. Useful as a conversation starter. Incomplete without local COL, the health coverage crossover at 65, and any group benefits still in force. A readiness check that claims to ground a score in cost-of-living data for your area is aiming at the right problem — soft bridge only to public tools like a Retirement Readiness Score marketed as a quick, free, no-obligation snapshot. Do not invent scoring formulas, weights, or thresholds. Re-run when you move or when healthcare jumps. One snapshot is a check-in, not a lifetime grade.
Build the basket — five line items that lie if you skip them
1. Housing
Housing is usually the biggest must-pay line and the easiest place people smuggle fantasy into the plan.
Price, for the place you will actually live:
Rent or mortgage principal + interest
Property tax (annual ÷ 12) Homeowners or renters insurance HOA / condo fees Utilities baseline (electric, gas, water, trash, internet) — not the mild spring month Maintenance reserve (roofs and HVAC do not care that you retired)
Working-years vs retirement geography. Same house, different math: commuting costs may fall; daytime utilities may rise; the “we’ll just stay forever” plan collides with stairs, bathrooms, and a spouse’s care needs later. Downsizing is not automatically cheaper — transaction costs, capital gains questions, and moving into a higher-tax or higher-HOA building can erase the headline savings. LOOK UP your county assessor and insurance renewal before you treat last year’s escrow as eternal.
Snowbird split: two sets of housing costs, two sets of utilities, travel between them, and the question of which address is “home” for tax residency. People budget the airfare and forget the double insurance and the empty-house risk.
2. Taxes (the COL line nobody puts in the grocery app)
Taxes are cost of living. Property tax sits in housing. State income tax on wages, pensions, IRA withdrawals, and sometimes Social Security sits in the annual plan whether you like it or not. Local income or occupational taxes exist in some places. Sales tax shows up in the grocery and dining lines.
Rule for this book: state tax treatment of retirement income varies and changes. Do not treat a blog’s “best states for retirees” ranking as gospel. LOOK UP your state’s department of revenue (and the destination state’s, if you’re moving) for how Social Security, pensions, and retirement-account withdrawals are treated in the year you’re planning. Then re-check when you move or when filing status changes.
Federal brackets, standard deduction, IRMAA, and RMD rules also change — see this guide and the LOOK UP boxes there. COL planning without a tax column is a vacation brochure.
3. Healthcare
Healthcare is the COL line that jumps at the Medicare crossover — and often jumps earlier if you leave employer coverage before 65.
While working with employer help, you may only “feel” the employee premium share and the deductible. In retirement (or in a bridge year), price:
Medical premiums (employer retiree plan, COBRA, marketplace, or Medicare Part B + Part D + Medigap or Advantage — this guide and this guide) Expected out-of-pocket (deductibles, coinsurance, copays) for your utilization, not a national average healthy 40-year-old Prescription reality (specialty drugs can dwarf the premium) Dental, vision, hearing if they sit outside medical Travel to specialists; parking; the spouse still on a worker’s plan vs both on Medicare
At Medicare, the shape changes: Part B premium (and possible IRMAA), drug coverage design, network vs predictability tradeoffs. Original Medicare does not quietly include routine dental, eyeglasses, or hearing aids. Advantage “extras” are not a full plan for those gaps — they are extras. Price the whole stack.
LOOK UP CURRENT — Healthcare COL inputs Employer SPD / premium sheets; Medicare.gov Plan Finder for your ZIP; HealthCare.gov if marketplace applies; CMS annual Parts A & B fact sheet for Part B / IRMAA EXAMPLE figures. Any dollar in a worksheet is EXAMPLE for that calendar year until you refresh.
4. Groceries and household consumables
Food is where national averages go to die. A household that cooks from staples in a low-cost metro does not share a basket with a household that eats out four nights a week in a coastal city — or with someone managing medical dietary needs.
Build your monthly food + household consumables from recent statements (bank/credit card), not from a USDA average alone. Then ask: does retirement change the pattern (more lunches at home, more travel dining, grandkids’ groceries)? Flexible dining out belongs in the flexible column; baseline nutrition belongs in must-pay. Mixing them hides the lever you need in a bad sequence year.
Inflation on your basket can differ from headline CPI. Eggs, insulin-adjacent supplies, and restaurant meals do not move in lockstep. Track your basket, not the newspaper’s vibe.
5. Transport
Working-years transport often includes commuting fuel or transit, parking, and a car sized for the job. Retirement transport may drop the commute and raise leisure miles — or drop to one car — or add flights to kids and grandkids.
Price:Car payment(s) if any
Insurance, registration, maintenance Fuel or charging Transit / rideshare baseline Travel to family (annualize the holidays and the “we’ll visit quarterly” promise)
Geography again: car-dependent suburb vs walkable core vs rural drive-to-everything. Moving to “be near the kids” can cut airfare and raise local housing. Moving to a lower sticker-price region can raise car miles if services are sparse.
Working years vs retirement geography
Three questions beat one fantasy ZIP:
1. Where will we live most months in the first decade of retirement? Not “someday.” The first decade is when sequence risk, healthcare crossover, and habit formation collide. Price that place.
2. Will we split time? Snowbird and dual-residence plans need two COL sketches and a tax-residency conversation with a professional — not a Facebook group vote.
3. What are we optimizing for: sticker price, kids nearby, healthcare access, or climate? Those goals conflict. A cheaper region with thin specialty care is not cheaper if you fly to Mayo every quarter. Kids nearby can be the highest-ROI “COL” decision even if the mortgage is higher — if grandparent time and caregiving capacity are part of the plan. Say the tradeoff out loud.
Downsizing, paid-off housing, and renting vs owning are tools, not morals. Run the escrow and the insurance before you celebrate the listing price.
Inflation vs COL — different cities, different baskets
Headline CPI is a national story about an average basket. Your COL is a local story about your basket.
Healthcare and property tax often outrun generic inflation for retirees Shelter inflation is local — your metro’s rents and home prices are not the national print Social Security COLA follows its own index (CPI-W), which may not match your grocery-plus-healthcare reality Some pensions have partial or no COLA — floor income that doesn’t keep up raises the gap over time
Plan need in today’s dollars first so the household recognizes the bills. Then stress which lines grow faster. Don’t “inflate everything at 3%” and call it analysis if healthcare and rent are the lines that actually bite.
Soft bridge — readiness in local context
An optional educational readiness snapshot that asks a few questions about goals and where money sits today, and that markets itself as using cost-of-living data for your area, is aiming at the denominator problem. It is a marketing/education tool, not required, not advice, and not a complete file — live site terms say the estimate can omit Social Security, pensions, and other income, and they do not guarantee accuracy. Published by Groei Group LLC as a marketing company, not an insurance agency; licensed partners contact you only if you ask for a consultation.
Use that kind of tool as a periodic check-in when geography or healthcare changes — not as a product pitch and not as invented math. This book will not publish a fake formula. If you move from Indianapolis to a higher-cost coast, or from a two-story house to a single-level condo two counties over, re-run the snapshot. The denominator changed.
Concrete baskets — two teaching shapes (not your numbers)
Shape A — Still in the same metro, paid-off house, both on Medicare next year. Must-pay housing looks “cheap” on the mortgage line and expensive on property tax + insurance + maintenance. Healthcare flips from employee premium share to Part B (+ possible IRMAA) + Part D + Medigap or Advantage + dental/vision if separate.
Groceries may not change much. Transport drops commuting and may add grandkid miles. The trap: celebrating the paid-off house while under-pricing the Medicare stack and the roof fund.
Shape B — Planning a move to a “cheaper” state to be near one adult child. Sticker rent or purchase price may look lower. Re-price: state tax on retirement income (LOOK UP both states), auto insurance, homeowners in a different wind/hail/flood zone, specialist access, and whether Medicare Advantage plans you like even exist in that county. Plan availability for Medicare Advantage is county / CMS service-area based — your favorite plan in Marion County is not a portable national product. Medigap (Medicare Supplement) quotes typically move with age, sex, tobacco, ZIP, and the carrier’s rating method. Geography is not only a housing decision. It is an insurance-market decision.
Neither shape is advice. Both are reminders: change one ZIP and five COL lines move.
County is part of the product (healthcare COL)
When you price retirement healthcare, you are not shopping “Medicare” as one SKU.
Medicare Advantage and Part D offerings depend on where you live — contracts and service areas are filed by county / region with CMS. Move counties and the menu changes. Some plans vanish; some appear; networks and drug formularies differ. Medigap is a different animal: standardized plan letters in most states, but premiums are rated with factors such as age, sex, tobacco use, and location, and with issue-age / attained-age / community-rated methods depending on carrier and state rules. Assistance programs (Medicare Savings Programs, Extra Help for drugs) are government eligibility decisions. A broker or counselor can help you prepare applications; they do not decide whether you qualify. Income and resource rules have federal floors; many states screen differently — LOOK UP your state SHIP / Medicaid agency figures for the year you’re applying. Extra Help rules changed in recent years (partial Extra Help ended; full Extra Help for those who qualify) — verify current SSA/Medicare.gov language before you rely on an old flyer.
If your COL worksheet has a single line that says “Medicare — $200,” you have not priced Medicare. You have priced a hope.
Holistic discovery vs one-number theater
The useful posture for COL is the same posture that separates good benefits work from product churn: discover the whole household picture before you prescribe a tool. Income need, local housing, tax residency, healthcare service area, spouse timing, and cash reserves belong on one table. Transactional churn — swapping a plan or chasing a headline premium without re-pricing the basket — creates activity without safety.
That is the Total Wealth style question in plain English: how do housing, health premiums, taxes, and portfolio withdrawals fit one puzzle for this household — not how do we sell the next widget. Soft bridge only: whole-picture readiness checks that ground a snapshot in local cost of living are trying to start that discovery. They are not a substitute for a licensed conversation when the dollars get personal.
Owner and still-working COL notes
If you still own a business or W-2 job:
Employer premium subsidies are part of current COL and disappear or shrink in retirement — model the cliff HSA contributions (if eligible) change the healthcare savings line; Medicare enrollment can interact with HSA eligibility — ask before you dual-track Business travel and company cars can hide personal transport costs that reappear later A sale or wind-down year can spike income (and IRMAA two years later) while you are also re-pricing personal health coverage — stack those calendars
Still-working geography matters too: some people “retire in place” at 62 with employer coverage until 65; others relocate first and bridge with marketplace or spouse coverage. Price the bridge at full freight.
A monthly worksheet skeleton (copy this)
Line Working-years
$/mo
Retired $/mo (home ZIP)
Notes
Housing (PITI / rent + HOA + util + maint reserve)
Property tax portion (if not in escrow)
State/local income tax reserve (annual÷12)
Medical premiums + expected OOP
Drugs (patient pay after coverage)
Dental / vision / hearing
Groceries + household
Transport + family travel reserve
Life / disability / LTC / umbrella (personal)
Flexible (travel, dining, gifts, hobbies)
Total need
Reliable sources (SS, pension, etc.)
Gap
Fill with your bills. Leave blank cells visible — blanks are the agenda.
1. Build two rows: current working-years spend vs retired spend, same five line-
item groups (housing, tax, healthcare, groceries/household, transport) plus flexible and “other insurance.” 2. Localize every big line with a real bill, assessor page, or plan finder quote for the
ZIP you’ll live in. 3. Split temporary vs permanent need (bridge to Medicare vs forever) so you
don’t panic-cut lifestyle for a four-year problem. 4. Mark inflation-sensitive lines (healthcare, property tax, rent) separately from
controllable flexible lines. 5. Re-price after any geography decision — before you list the house, not after the
closing dinner. 6. Feed the gap math: need − reliable sources = gap. Wrong need →
wrong gap → wrong tools.
National averages as personal gospel. Directional. Not your escrow. One-time calculator theater. A score or article without updated healthcare and housing inputs is a mood. Ignoring taxes because “we’ll be in a lower bracket.” Sometimes true; often incomplete once RMDs, IRMAA, and state tax enter. Assuming downsizing automatically funds the gap. Transaction costs and replacement housing can eat the story. This chapter is not tax, legal, or personalized advice. LOOK UP CURRENT figures; talk to licensed professionals for your facts.
Checklist — what to price before you trust a “number”
Housing: rent/mortgage, property tax, insurance, HOA, utilities, maintenance reserve for the retirement address State/local tax treatment of retirement income LOOKED UP for current and destination state (not a ranking meme) Healthcare: working bridge premiums + Medicare-era stack for your ZIP; drugs named; dental/vision/hearing not assumed free Groceries/household from your statements, not only a national food plan Transport including family travel you actually intend Flexible column separated so you have a lever in a bad year Temporary bridge costs labeled separately from permanent need Inflation-sensitive lines flagged (healthcare, shelter, property tax) Geography plan written in one sentence (stay / move / snowbird / near kids) Gap math re-run with the local denominator Optional: a local-COL readiness snapshot re-run after big changes — conceptual check-in only
Soft close
No need to rip up the retirement plan because a national article scared you — or comforted you. Pull last year’s statements, price the ZIP you’ll actually live in, and make healthcare a first-class line item. Worth a second look at the denominator before you argue about the numerators — even if you end up staying put in the same house with the same plan.
Every year I have a conversation that starts the same way.
“We think we’re fine. We just don’t know what ‘fine’ costs.”
They’re not asking for a product. They’re asking for a denominator. Income need is that denominator. Everything else — Social Security timing, portfolio withdrawals, whether to keep working — is numerator work. Skip the need and you’re optimizing noise.
The scene that keeps repeating
A household slides a 401(k) statement across the table and a Social Security estimate printed three years ago. They want a yes/no on retiring this year. I ask them to ignore the balance for ten minutes and write the monthly must-pay list as if the paycheck already stopped.
Halfway through, someone mutters, “That can’t be right — that’s almost what we take home now.”
Correct. Lifestyle didn’t retire when the job did. The gap is not embarrassment. The gap is math.
I’ve also watched the opposite error: people who undershoot need on purpose because a popular article said “you only need 70%.” Then healthcare and property tax show up like they didn’t read the article. Percentage rules are average stories. Your ZIP is not an average.
Income need = what the household must spend and chooses to spend, on a monthly and annual basis, in today’s dollars — split into must-pay, flexible, and healthcare.
Reliable income sources = checks that show up with high confidence: Social Security once claimed, pension annuity payments, other contractual income you already own and can explain in plain English.
The gap = income need − reliable sources.
The gap is what portfolio withdrawals, bridge work, or additional floor tools have to cover. Until you have a gap number, “Do I have enough?” is a mood with a login screen.
People reverse the order constantly. They start with the portfolio and ask what lifestyle it “supports” under a withdrawal rule of thumb. Rules of thumb fail when:
Healthcare spikes in a single year. One spouse dies and the check changes. Local housing and tax costs aren’t national magazine averages. The first withdrawal years hit a bad market (sequence risk from an earlier chapter). The “temporary” bridge to Medicare quietly lasts four years.
Gap math starts with lifestyle truth, then asks which tools fill the hole. That order keeps life, health, and wealth on the same string instead of three wishful spreadsheets.
Build the need — three columns, not one blob
Column A — Must-pay. Housing (rent or mortgage, property tax, homeowners/renters insurance, HOA), utilities baseline, food baseline, required debt service, mandatory insurance premiums, required medications, basic transport. Litmus test: if skipping it breaks the household inside 60 days, it’s must-pay.
Column B — Flexible. Travel, dining out, gifts, hobbies, home upgrades, extra vehicles, subscriptions you could cut without a crisis. Flexible is not “unimportant.” It’s “pausable.” The power of Column B is that it gives you a lever in a bad sequence year without touching the floor.
Column C — Healthcare. Premiums you’re about to lose employer help on; future Medicare Part B/D and supplement or Advantage premiums; expected out-of-pocket; dental/vision if separate; hearing; ongoing therapy. Healthcare gets its own column because it refuses to behave like groceries. It jumps. It also changes shape at 65.
Add A + B + C for a current lifestyle need. Then build a second row: retired lifestyle need — same columns, honest edits (commuting down, maybe travel up, premiums different, employer HSA contributions gone). Two rows beat one fantasy number.
Annualize it. Monthly feels friendly. Annual is what tax brackets, IRMAA lookbacks, and RMD conversations speak. If you only plan in monthly terms, you’ll under- respect April.
A simple walkthrough shape (not your numbers)
Suppose a household’s retired-need draft looks like this as a teaching shape — not a quote, not advice:
Must-pay: housing + food baseline + utilities + debt + basic insurance Flexible: travel + dining + gifts Healthcare: premiums + expected OOP + dental
They total those lines into an annual need. Then they list Social Security (at a chosen claiming age) and a small pension as reliable sources. Subtract. The remainder is the gap the portfolio or bridge work must fund.
Your lines will differ. The shape shouldn’t: need first, reliable sources second, gap third.
Locality is not a footnote
Cost of living is local. Rent in one county is a mortgage payment two counties over. Property tax, state tax on retirement income, and specialist networks all vary. A national “you need X% of pre-retirement income” piece does not know your ZIP, your drugs, or your property tax bill.
This is why educational readiness tools that ground a score in cost-of-living data for your area can help as a snapshot. Soft conceptual bridge only: an optional Retirement Readiness Score that asks a few questions about goals and where money sits today — marketing/education tool, not required — can sketch need vs. resources in local
context. Site terms: educational estimate, no accuracy guarantee, not a complete Social Security/pension picture. Groei Group LLC publishes tools in that category as a marketing company, not an insurance agency; licensed partners contact you only if you ask. Do not invent scoring math. Re-run a snapshot when you move, when a spouse leaves work, or when healthcare costs jump. One score is a check-in, not a lifetime grade.
Reliable sources — be strict
Count as reliable only what you can defend out loud:
Social Security after you’ve chosen a claiming age scenario (estimates change; claiming locks a path). Pension payments you understand, including survivor options still open — ask HR before you assume. Income from contracts you already own and can explain (if you can’t explain an annuity you hold, you need questions — not a rip-and-replace impulse). Other contractual income with clear duration and payer risk you accept.
Do not count as reliable:
Hoped-for market returns. “We’ll just sell the house someday.” An inheritance that isn’t money in hand. Overtime or bonus you won’t earn forever. A business sale price nobody has signed. A neighbor’s pension story applied to your plan type.
Hope is not a source. Hope is a risk factor wearing optimism.
Temporary gap vs. permanent gap
Label the gap in two colors:
Temporary — bridge to Medicare; bridge to FRA; bridge until a pension starts; bridge until a house is paid off. Temporary gaps argue for bridge work, short reserves, or a planned portfolio sleeve — not necessarily for permanently lowering lifestyle.
Permanent — the hole that remains after all floors are online for life. Permanent gaps argue for lifestyle edits, more floor, more accumulation time, or a sober look at whether the portfolio can carry that draw through longevity and sequence risk.
Mixing temporary and permanent into one scary number creates either panic or denial. Split them.
Healthcare inside the gap
Two households with the same mortgage can show wildly different gaps because of specialty drugs, out-of-network realities, or a spouse riding the worker’s plan with no Plan B. Price healthcare for the year you leave work and for age 65+. If you leave employer coverage before Medicare, price the bridge at full freight — COBRA, marketplace, or spouse plan — not at the subsidized employee contribution you got used to.
LOOK UP CURRENT — Healthcare cost inputs for gap math Employer SPD / premium sheets; Medicare.gov for Part B/D and plan compare in your ZIP; HealthCare.gov if marketplace applies. CMS sets Part A/B figures annually — any dollar in your worksheet is EXAMPLE for that calendar year until you refresh.
Inflation — two speeds
Plan need in today’s dollars first so the household can recognize the bills. Then ask a second question: which lines inflate faster than a generic average? Healthcare and property tax often do. Flexible travel might be controllable. Floor income may have partial COLA (Social Security) or none (some pensions).
A practical approach: build today’s need accurately, then apply a higher stress factor to Column C (healthcare) than to Column B when you glance five and ten years out. You don’t need a perfect inflation model. You need to stop pretending every line moves at the same speed.
The jobs the gap dollars must do
Once Need − Reliable = Gap, ask what job those gap dollars perform (expanded ):
Spend — fill the monthly hole. Grow — still need long-horizon fuel for longevity. Protect — dampen sequence risk and longevity risk. Transfer — survivor or legacy priorities.
Forcing one account to do all four jobs is how households panic in year two of retirement.
1. Fill three columns (must-pay / flexible / healthcare) for current life and retired
life. 2. Annualize both. 3. List reliable sources only — with monthly amounts at the claiming ages you’re
actually considering. 4. Subtract. Label temporary vs. permanent gap. 5. Stress-test: what changes if one spouse dies, if healthcare jumps 30%, if you
delay retirement two years? 6. Optional: run a locality-aware readiness snapshot as a second opinion — then
bring both pages to a licensed professional.
Gap math will not pick your funds, your claiming age, or your Medicare path. It will not replace a tax projection. If income is volatile (owners, commissioned sales), build need off a conservative average year, not your best year. If personal and business cash are tangled, separate personal must-pay from company cash before you call yourself retired on paper. This chapter also won’t settle a marriage argument about travel — but it will show what the travel line costs the string.
Contrast — calculator culture vs. gap culture
Style Emphasis Gap culture adds
Generic retirement calculator One pile target or success
probability
Local COL; healthcare crossover; reliable vs. hoped-for sources
Popular debt-payoff / simple- invest culture
Clean balance sheet, behavioral discipline
Funded monthly floor; survivor math; health spend as its own column
SSA estimate printout One benefit source How that source sits inside need;
temporary vs. permanent hole
an earlier chapter checklist
I have must-pay / flexible / healthcare columns for now and for retired life.
I annualized the need — not just a comforting monthly guess. I counted only strict reliable sources. I calculated Need − Reliable = Gap and labeled temporary vs. permanent. I priced the healthcare bridge if I leave work before Medicare. I noted locality (my costs, not a national average). I stress-tested survivor and healthcare-jump scenarios once. Optional: locality-aware readiness snapshot as a check-in — not a verdict.
Soft close
Worth writing the three columns before you debate claiming ages or portfolios — even if you stay at work another year. The gap doesn’t care about your timeline. It cares whether the math exists.
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