Entry № 14 · logged Oct 2, 2026Free, no sign-upEmergency Fund · Savings
Where should the reserve live? Somewhere boring enough to trust.
The emergency fund has one job — to be there, whole, the week income stops. Every home for it is graded on three marks: can it lose value, can you reach it in days, is it insured. The slip is attached so you can watch what the yield on a safe account actually contributes while you read.
At 4% APY the yield chips $1,376 into the prefilled six-month target. Real money — and still not a reason to move the fund anywhere it can fall.
The reserve ledger, Form EF-14. Left column: what one month of staying alive actually costs. Right column: what you have and what you add. The slip posts your 3, 6, 9, and 12-month targets and stamps how many months you can cover today.
Targets are your essential expenses multiplied by months — nothing fancier. The road-to-target lines assume the deposit lands monthly and the yield compounds monthly. When a target date says "not on this deposit," the deposit is $0 or the yield alone cannot close the gap.
Around this tool
From the ledger
How the ledger sizes a reserve
The hierarchy is short. First: a high-yield savings account at an insured bank or credit union, in your name, separate from everyday checking so a bad week does not spend it by accident. It pays a real yield — around 4% APY in the current market — it cannot drop in value, and transfers land in one to three business days. Second: a money market account at the same kind of institution, same insurance, similar access. Everything else fails a mark.
Brokerage accounts fail the first mark: the fund's worst month and the market's worst month are correlated, because layoffs cluster in downturns — a reserve that is down 20% the quarter you lose your job is a second emergency wearing a costume. CDs fail the second mark unless laddered with penalties you have priced in. Cash at home fails all three and earns nothing. Crypto fails the first mark so completely it does not get graded on the rest.
Yield still matters — as the tiebreaker. On the prefilled slip, 4% APY chips $1,376 into the six-month target and finishes the fund about three months early. That is worth one account move. It is not worth chasing an extra half-point into anything with a lock-in, a market price, or a fine-print withdrawal limit. Boring is the feature.
Disclaimer: arithmetic and general education, not financial advice. Deposit insurance limits and account terms vary by institution and country — check yours.
Filed answers
Questions from the reserve desk
Is a money market fund the same as a money market account?
No, and the difference matters in the month you need the money. A money market account is a bank deposit — insured, fixed value. A money market fund is an investment product — very stable, but not deposit-insured and not a bank account. For a reserve, the insured account wins on the mark that counts.
Should I keep the fund at a different bank than my checking?
It helps. Same-bank reserves are one tired-evening transfer away from becoming spending. A separate institution adds a day or two of friction in normal times and still delivers in one to three days in an emergency — the right amount of slow.
Is this financial advice?
No — general education and arithmetic on numbers you type.
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