Does Home Equity Count Toward Your Coast FIRE Number? The Forum Consensus, and Where It Is Wrong
Does home equity count toward your coast FIRE number? Ask the Bogleheads or the Mr. Money Mustache forums and the answer comes back fast and nearly unanimous: no. The house is not an investment you can spend, so it does not go in the number. I agree with them about 90 percent. The interesting part is the remaining 10 percent, where the consensus is right for the wrong reason and the house matters anyway.
The case against counting it is airtight as far as it goes. Your coast FIRE number is the amount of invested money that, left alone, compounds into your full retirement target by your target age. To do that job, the money has to be invested. Home equity is not invested; it is parked in a place you sleep. You cannot spend it without selling the roof over your head, taking on debt against it, or dying in it with a reverse mortgage. A forum poster once put it as "if it doesn't produce an income, it's just a thing I own," and that sentence has ended a thousand threads.
Does home equity count toward your coast FIRE number? The indirect way it does
Here is what the consensus misses, or at least undersells. Home equity never belongs on the asset side of the coast FIRE math. It belongs on the spending side. A paid-off house reduces what you need to spend in retirement, and everything about your coast number is derived from that spending figure.
Run the numbers and the effect is enormous. Suppose you need $50,000 a year in retirement. At a 4 percent withdrawal rate, your FI target is $1.25 million. Now suppose a paid-off house removes $18,000 a year in rent or mortgage payments from that budget, leaving $32,000. Your target drops to $800,000. Your coast number, the amount you need invested today to reach that target on compounding alone, drops with it. The house never entered the portfolio. It never had to.
This is why the "just a thing I own" framing is incomplete. A paid-off house is a thing you own that permanently deletes one of the largest line items from your future budget. Nobody would say a $18,000-a-year pension does not count toward FIRE. The house is doing the same job from the expense side.
When equity genuinely belongs in the number
There are three cases where I would count home equity, or part of it, as an asset in the math. First: a real plan to sell and downsize. If you own a $500,000 house and intend to sell at retirement and buy a $300,000 one, roughly $200,000 of equity becomes investable. Count that, net of selling costs and taxes, not the full $500,000. Second: rental property. A rental is income-producing, so its equity behaves like any other investment asset, discounted for vacancies, maintenance, and the illiquidity of the thing. Third: a reverse mortgage you actually intend to use, which the MMM forums treat as the only respectable way to count a primary residence.
Notice what these three have in common: the equity becomes spendable. That is the entire test. Money you cannot turn into groceries does not belong in a retirement number, whatever Zillow says your house is worth.
The mortgage question underneath
This is where I hold both sides at once. Paying down a mortgage shrinks your future expenses, which lowers your coast number. But every dollar that goes into the mortgage is a dollar not compounding in the market, which pushes your coast number up. Which effect wins depends on your interest rate versus your expected return, your timeline, and honestly your temperament. A paid-off house at 45 with a 3 percent mortgage was probably a worse financial trade than investing the difference, and a better sleep-at-night trade. People who pretend only one of those matters are selling something.
My own read: run the coast number with invested assets only, then sanity-check the spending side against what the house actually costs you now and will cost you later. That keeps the math honest without pretending a $400,000 house contributes nothing to your retirement. It contributes enormously. Just not the way an index fund does.
Wondering if your home changes the math?
Plug in your invested assets, growth rate, and target to see when you can downshift.
Calculate My Coast FIRE NumberFrequently asked questions
Does home equity count toward your coast FIRE number?
No, not directly. Your coast FIRE number is the invested portfolio that compounds to cover your retirement spending, and home equity cannot be spent unless you sell. But a paid-off home lowers your spending target, which shrinks the number from the other side.
Should I include my house in my net worth for FIRE?
For net worth, yes, it is an asset you own. For your FIRE or coast FIRE number, no. The number is built from investable assets that produce income or can be drawn down; a primary residence does neither while you live in it.
Does paying off a mortgage help coast FIRE?
It helps by cutting your required retirement spending. Lower spending means a lower FI target, which means a lower coast number today. But the dollars that paid down the mortgage are no longer compounding investments, so it is a tradeoff.
When should home equity count in a FIRE calculation?
When it becomes spendable: a concrete plan to sell and downsize (count the net equity you will actually release), rental property (count it as an income-producing asset, discounted for costs and vacancies), or a reverse mortgage you genuinely intend to use.
Do coast FIRE calculators include home equity?
No. They ask for current invested assets, a real growth rate, your target retirement age, and your spending. Home value has no input field, which is the calculator's way of telling you where it belongs.
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