Bank Gap by State

The Bank Gap in Alaska

Alaska has no state income tax at all, funded instead by oil and mineral revenue, which removes the tax angle entirely — but the state's above-average cost of living makes the dollar cost of the Bank Gap bigger than the tax-free headline suggests.

Big-bank average0.38%

Best available4.40%

$1,005/yrlost on a $25k balance · 4.02 pp spread

Last reviewed August 7, 2026 · SwitchWize Research Desk

Best savings APY

4.40%

high-yield

National average

0.38%

big-bank avg

APY gap

4.02 pp

spread

AK tax on interest

None

no income tax

No state tax — full gap is yours

$1,005/yr

on a $25,000 balance

On a $25,000 balance, the gap is about $1,005 a year. Alaska has no state income tax, so you keep the full amount.

Estimated Bank Gap by balance

Estimated annual Bank Gap by balance at 0.38% current APY versus 4.40% better-fit APY
Balance	Current earnings	Better-fit earnings	Estimated Bank Gap
$5,000	$19	$220	$201
$10,000	$38	$440	$402
$25,000	$95	$1,100	$1,005
$50,000	$190	$2,200	$2,010
$100,000	$380	$4,400	$4,020

Estimates over 12 months at 0.38% current APY and 4.40% better-fit APY. Example only — your result depends on your balance, rates, and time horizon.

Why Alaska changes the math

Alaska levies no state income tax and no state sales tax, so savings interest is taxed only at the federal level. That removes the Treasury-exemption advantage that matters in high-tax states — in Alaska the simplest, highest-value move is the top-yielding FDIC-insured savings account.

Remoteness drives up everyday costs in much of Alaska, which tends to push emergency-fund targets higher than the national norm, making the full, untaxed Bank Gap on that balance worth more in real terms.

Cost of living in Alaska is above the national average, especially for energy, housing, and imported goods, which shapes how large an emergency fund needs to be and therefore how many dollars the Bank Gap quietly costs on idle cash.

After-tax tip

Because Alaska has no state income tax, the Treasury state-tax advantage does not apply. The simplest high-value move is to put liquid cash in the highest-yielding FDIC-insured savings account.

Open the short-term savings tool

Frequently asked questions

Does Alaska tax high-yield savings account interest?

No. Alaska has no state income tax, so savings account interest is taxed only at the federal level. There is no state tax drag on the extra interest you earn by switching to a better account.

Is a high-yield savings account worth it in Alaska?

Yes. With no state income tax, the after-tax case is simple: moving cash from a national-average account to a top high-yield savings account keeps more in your pocket, and there is no state-tax wrinkle to weigh.

Are T-Bills better than a HYSA for Alaska savers?

Usually not on tax grounds. The main edge T-Bills have elsewhere is exemption from state income tax, and Alaska has none. For most Alaska savers the highest-yielding FDIC-insured savings account is the cleaner choice for liquid cash.

Your personal Bank Gap

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Educational information, not tax or financial advice. State tax rules are summarized at a high level and depend on your full situation. Rates are illustrative of current market conditions and should be confirmed with the provider. Confirm tax treatment with a qualified professional.