Best HYSA in Illinois (2026)
HYSA APYs are set at the national level — Illinois residents get the same top options as everyone else: Pibank Savings 4.25%, EverBank Performance Savings 4.20%, BrioDirect High-Yield 3.75%, Varo Bank 3.75%, Wealthfront Cash Account 3.55%. What differs is after-tax yield: Illinois's 4.95% state income tax brings the modeled combined marginal rate to ~29% under the stated federal assumption, netting ~3.02% in this illustration.
| Gross APY | Federal only (24%) | Combined (fed + IL) | On $20,000 |
|---|---|---|---|
| 5.50% | 4.18% | 3.91% | $782/yr |
| 5.00% | 3.80% | 3.55% | $711/yr |
| 4.50% | 3.42% | 3.20% | $639/yr |
| 4.00% | 3.04% | 2.84% | $568/yr |
| 3.50% | 2.66% | 2.49% | $497/yr |
Illustrative 24% federal marginal bracket; actual tax depends on filing status, bracket, deductions, state rules and account. Verify current guidance before acting.
How Illinois ranks for savers
Illinois sits in the middle of the pack — #12 of 20 covered states by tax friendliness. Its 4.95% rate on interest costs a saver with $50,000 at 4.25% APY about $105 per year — real money, but a fraction of the $283 the same balance surrenders in California. At this level, chasing an extra 0.25% of APY matters more than the state tax: switching to a higher APY can offset some of the state-tax bill.
The honest answer about "state-specific" HYSA rates
HYSA APY is set by each bank at the national level; there is no state-by-state pricing. A savings account marketed to Illinois residents will pay the same APY as one marketed in any other state. The only meaningful state-level variables are:
- State income tax on interest. Illinois taxes HYSA interest at up to 4.95% state rate.
- Local credit unions. Small statewide credit unions occasionally run promotional first-tier APYs above the national online-HYSA average. Rarely competitive above $10K.
- Branch availability. Non-issue for online HYSAs but matters if you want in-person deposits.
Full HYSA ranking (national, 2026)
For the full comparison of top HYSA rates available to Illinois residents, see our national HYSA rate landscape. For projecting how much a specific balance will earn, use our HYSA calculator.
Other Illinois finance pages
- CD calculator — locked-in-term alternative to HYSA
- Emergency fund calculator — how much to keep liquid
- APY calculator — nominal-to-effective yield conversion