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Inflation Hit 3.7%. In the 22% Bracket, Your Savings Needs 4.74% Just to Stand Still.

September's CPI came in at 3.7% over the year. After federal income tax, a savings account has to pay 4.20% in the 12% bracket and 4.74% in the 22% bracket just to keep up. On $10,000, the 0.37% national average loses about $341 of buying power a year. The best savings rates and a six-month Treasury bill lose far less. Here's the math.

Hands holding a few dollar bills beside an empty glass jar on a white desk

If your emergency fund sits in a savings account, here’s the uncomfortable number from this week’s inflation report. In the 22% tax bracket, your account has to pay 4.74% just to stand still.

Almost nothing does.

Where 4.74% comes from

Prices rose 3.7% over the 12 months through September, the Bureau of Labor Statistics said on October 14. That’s the bar your cash has to clear.

Your bank’s rate doesn’t clear it on its own, because the IRS takes a cut of the interest first. Savings interest is taxed like a paycheck. So the rate that keeps up with 3.7% after federal tax is 3.7% divided by what you keep.

In the 12% bracket, that’s 4.20%. In the 22% bracket, 4.74%. In the 24%, 4.87%. Live in a state with income tax and the bar goes higher still.

What $10,000 actually loses

Here’s a year on $10,000 in the 22% bracket, measured in what the money can buy. Rough numbers, ignoring compounding.

Where the money sitsRateBuying power lost in a year
Average savings account (FDIC national rate)0.37%about $341
Ally or Capital One 360 savings3.10%about $128
Vio Bank savings4.01%about $57
Six-month Treasury bill (October 13 auction)4.351%about $31

The average account loses more than ten times what the Treasury bill does. That’s the bank’s bet: that you won’t notice $341 leaking out quietly every year.

The T-bill also skips state income tax, which none of the savings accounts can say. In the 12% bracket it’s the only option on this list that actually comes out ahead, by about $13. We covered why bills win on tax in our T-bill versus savings breakdown.

Here’s the catch on 3.7%

It might not be your number. Gasoline is up 34.2% from a year ago and energy overall 20.4%. Strip out food and energy and prices rose 2.6%.

If you drive a lot, 3.7% probably understates your inflation. If you don’t, your break-even in the 22% bracket is closer to 3.33%, and a 4% account clears it.

Either way, the verdict on the 0.37% account doesn’t change. Parking your emergency fund there is dumb math.

The move

Log in and read your actual savings rate tonight. If it starts with a zero, move the money. A 3% to 4% online savings account is a one-time transfer, and our savings calculator shows what the gap is worth on your balance. Shop rates on our best savings page.

For cash you won’t touch for six months, compare the T-bill. It’s the closest thing to keeping up without locking money away.

If you want a product that tracks inflation by design, that’s an I bond. Treasury resets its inflation rate every May 1 and November 1 from the CPI. Read our I bond rundown before November 1, when the new rate posts.

Nothing on this list fully beats 3.7% after tax for most of you. The goal right now is to lose the least.

How Candid Yak makes money. Some of the products we write about pay us if you apply or sign up through our links. That never changes our verdict, our rankings, or the numbers in this article. We call a bad deal a bad deal whether it pays us or not. Some brands shown in our comparison tools are placeholder examples while we finalize partner agreements, and we label them as such.

Frequently asked questions

What savings rate do I need to beat 3.7% inflation?

It depends on your tax bracket, because savings interest is taxed as ordinary income. To net 3.7% after federal tax, you need about 4.20% in the 12% bracket, 4.74% in the 22% bracket and 4.87% in the 24% bracket. State income tax pushes the number higher. The 3.7% is the September 2026 CPI-U change over 12 months, released October 14, 2026.

Is 3.7% inflation my real inflation rate?

Maybe not. Energy drove it. Gasoline was up 34.2% over the year and energy overall 20.4%, while prices outside food and energy rose 2.6%. If you drive a lot or heat with fuel, your own number is likely above 3.7%. If you don't, it's likely closer to 2.6%, where the 22% bracket break-even drops to about 3.33%.

How much does $10,000 in savings lose to inflation right now?

In the 22% bracket against 3.7% inflation, roughly $341 a year at the FDIC's 0.37% national average savings rate, about $128 at 3.10% (Ally and Capital One 360 on October 14, 2026), and about $57 at Vio Bank's 4.01%. A six-month Treasury bill at the October 13 auction's 4.351% loses about $31 after federal tax and owes no state tax. These are rough one-year figures that ignore compounding.

Is there a savings product that keeps up with inflation automatically?

I bonds. Treasury resets their inflation rate every May 1 and November 1 from changes in the CPI-U, and adds it to a fixed rate set at purchase. The current composite rate is 4.26% for bonds issued through October 31, 2026.

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