U.S. dollar bills in small denominations

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Emergency Cash: How Much and Where to Keep It

How much emergency cash to keep for an outage, why small bills matter, where to store it at home, and what FDIC insurance does and doesn't cover.

Read: 7 min
Updated: October 6, 2026

Keep enough cash at home to cover a few days of basics: fuel, food, medicine and maybe a motel night. Keep it in small bills ($1s, $5s, $10s, $20s), split between a fire- and water-resistant box at home and your go-bag. Utah's state preparedness program says to keep at least five days' worth of cash in small bills. Leave everything beyond that in an FDIC-insured bank account, where it's actually protected.

The rest of this post covers how to get to your own number, why the bill size matters as much as the total, and where cash at home is and isn't safe.

01Why cash still matters when everything takes cards

Card readers, cash registers, ATMs and gas pumps all need two things: power and a network connection. When a storm takes out either one, a store full of food can't sell it to you on a card. Ready.gov says it plainly: ATMs and credit cards may not work during a disaster, right when you need to buy supplies, fuel or food.

The stores that do open in an outage are often running on a generator with a cash box and a hand-written sign. Your phone wallet is no help if the cell towers are down or overloaded.

This matters most in the first couple of days, which is exactly when you should be staying home and riding it out. You might need one trip out for gas, ice, a prescription refill or a bag of salt for the steps, and cash is what gets you through that trip.

02Why small bills, not hundreds

A store running on a cash drawer during an outage can't break a $100 bill when the bank hasn't come by with change in three days. If you hand over a $50 for $12 worth of gas, you may be told to take $50 worth of goods or nothing.

Aim for a mix like this:

Mostly $20s for the bigger stuff (a tank of gas, a motel, a grocery run)
A good stack of $5s and $10s
Twenty or so $1s
A roll of quarters for laundromats, vending machines and air pumps

Break your bills at the bank teller window when you're in there anyway. Any bank or credit union will hand you small bills for a large one, and it costs you nothing.

03How much: build your own number

There's no single right dollar amount. A retired couple in a paid-off house needs less than a family of five with two cars and a kid on a daily medication. Work it out on paper with your real prices:

Fuel. One fill-up for each vehicle you'd actually drive, plus a can or two of generator gas. (See how much generator fuel a day takes.)
Food and water. Two or three days of groceries for your household, in case your pantry and fridge come up short.
Medicine. Your pharmacy copays for anything you can't miss, at full cash price if the insurance system is down.
Lodging. One or two nights at a motel near you, in case the house gets too cold or the water stops.
Odds and ends. Ice, batteries, a tarp, a tow, a neighbor's kid who shovels your drive.

Add it up. That's your floor. If it comes out to more than you can set aside right now, start with the fuel and medicine lines and build from there. A partial stash still beats an empty envelope.

This is a grab-and-go amount for a few days of trouble, not savings and not an investment. Your long-term emergency fund belongs in a bank account.

04Where to keep it

At home: split it up

Don't keep it all in one spot. A common setup:

The main stash goes in a fire- and water-resistant document box or safe, along with your grab-and-go document binder.
A smaller amount goes in your bug-out bag or 72-hour kit, so it leaves with you if you have to leave.
A little goes in the glovebox or the winter car kit for gas and a tow.

Seal each bundle in a zip-top bag. Basements flood, and so do sump pits when the power drops. A cheap freezer bag keeps a stack of twenties dry in a damp tote or a wet glovebox.

The FDIC itself warns that a burglar can get into your house and your home safe more easily than into a bank vault. So don't announce the stash, don't put it in the bedroom dresser everyone checks first, and bolt down a small safe if you buy one.

Not in a safe deposit box

A safe deposit box is fine for a property deed. It's the wrong place for emergency cash, for two reasons:

You can't get to it. If the bank is closed because of the same storm, so is your box.
It isn't insured. The FDIC is clear that cash in a safe deposit box is not covered by deposit insurance if it's stolen or damaged. A box is rented storage space, not a deposit account, and banks generally don't insure what's in it.

In the bank: the FDIC part

Money in a checking or savings account at an FDIC-insured bank is covered up to $250,000 per depositor, per bank, per ownership category. Credit unions have similar coverage through the NCUA. Cash under the mattress has no such protection. So keep a few days' worth at home and leave the rest where the government insures it.

05Check your homeowner's or renter's policy

Here's the part most people don't know. A standard homeowner's policy (the common ISO HO-3 form) usually caps cash at about $200 for theft, no matter how much was actually taken. Some insurers and some policy forms set a higher limit, and you can often add an endorsement to raise it.

Pull your policy and look for a "special limits of liability" section. That number is roughly what you'd get back if the stash walked off. Limits vary by company and by state, so check your own policy and ask your agent. While you're at it, film your house for the insurance inventory.

06If the cash gets burned or soaked

Burned, water-logged or chewed bills aren't automatically lost. The Bureau of Engraving and Printing runs a free mutilated currency service. If more than half of a bill is there and identifiable, it can usually be redeemed. Seriously damaged money has to be mailed to the BEP for examination, and claims can take months to process.

Don't try to pull a charred brick of bills apart. Leave it as is, box it carefully and follow the BEP's instructions. Bills that are only torn or dirty can often be swapped at your own bank.

07Keep it from quietly disappearing

The biggest threat to an emergency cash stash isn't a burglar. It's you, borrowing $40 for pizza and never putting it back.

Write the amount on a card inside the envelope or box.
Check it twice a year. Doing it when you change the clocks or test your smoke alarms makes it easy to remember.
If you use any of it, refill it within the week.
Tell one other adult in the house where it is. Cash nobody can find doesn't help anyone.

08Your next step this week

Do the five-line math above with your real prices.
Stop at the bank and get it in $1s, $5s, $10s and $20s, plus a roll of quarters.
Split it: main stash, go-bag, glovebox. Bag each one against water.
Look up the cash limit on your homeowner's or renter's policy.
Put a reminder on your calendar to count it again next spring.

Sources (6)

Photo: Combat cash 131104-A-ZT122-002 by Sgt. Sinthia Rosario, Public domain.