High-Yield Savings vs CD: Which Earns More in 2026?

How the comparison works

On the defaults — $10,000.00 in, a 4.00% HYSA and a 4.50% CD, 1.0 years, a 3.0-month penalty and a 22.00% tax rate — the HYSA ends at $10,400.00 and the CD at $10,450.00, so CD wins by $39.00 after tax. The HYSA earns $400.00 of interest and keeps $312.00 after tax; the CD earns $450.00 and keeps $351.00 after tax. The pre-tax gap is $50.00 and the after-tax gap is $39.00. Both accounts earn the SAME tax treatment — the tax rate changes the numbers, not the winner: with no tax at all the after-tax gap is $50.00, exactly the pre-tax gap, and at 37% it is $31.50, but the CD still wins either way. APY is the effective annual yield — it already includes compounding, so the future value is simply the deposit times (1 + APY) raised to the term in years. The CD penalty is charged on the deposit at the CD rate, in months of interest — with a 6-month penalty it can eat the entire 6 months of interest and dip into principal. A CD only wins if you can leave the money alone until maturity.

The worked example, line by line

Setup: $10,000.00 in, HYSA 4.00%, CD 4.50%, 1.0 years, 3.0-month penalty, 22.00% tax.

Line 1 — the HYSA value. $10,000.00 × 1.04 = $10,400.00; interest $400.00.

Line 2 — the CD value. $10,000.00 × 1.045 = $10,450.00; interest $450.00.

Line 3 — the pre-tax gap. $10,450.00 − $10,400.00 = $50.00 — the CD is ahead before tax.

Line 4 — the tax. The HYSA keeps $400.00 × (1 − 0.22) = $312.00 after tax, for an after-tax value of $10,312.00; the CD keeps $450.00 × (1 − 0.22) = $351.00, for an after-tax value of $10,351.00.

Line 5 — the after-tax gap. $10,351.00 − $10,312.00 = $39.00 — CD wins by $39.00 after tax. The default result in full: HYSA $10,400.00 (interest $400.00, after-tax $312.00, after-tax value $10,312.00) | CD $10,450.00 (interest $450.00, after-tax $351.00, after-tax value $10,351.00) | CD wins by $39.00 after tax ($50.00 pre-tax).

Line 6 — the early withdrawal at 6 months. The CD has accrued $222.52 but owes a $112.50 penalty, so its net interest is $110.02 and its value is $10,110.02; the HYSA has accrued $198.04 and is worth $10,198.04 — HYSA wins by $88.02 if you need the money at 6 months.

Line 7 — the rounding convention. Rounding convention: totals are computed from unrounded values, so rounded parts may differ by a cent from their rounded sum — and gaps are the difference of the displayed totals. The unrounded early-withdrawal gap at 6 months is −$88.01, but the displayed gap — $10,110.02 − $10,198.04 — is −$88.02, and the page shows the displayed figure.

Every branch, checked

Deposit $25,000: HYSA $26,000.00, CD $26,125.00, CD wins by $97.50 after tax. A bigger deposit makes the same half-point rate gap worth more dollars.

Deposit $1,000: HYSA $1,040.00, CD $1,045.00, CD wins by $3.90 after tax. On a small deposit the CD’s edge is pocket change — the lock-up may not be worth it.

HYSA APY 4.50%: HYSA $10,450.00, CD $10,450.00, Tie. Equal APYs mean equal values — there is nothing to choose between them on return alone.

HYSA APY 5.00%: HYSA $10,500.00, CD $10,450.00, HYSA wins by $39.00 after tax. A savings rate half a point above the CD flips the result — and the HYSA stays flexible too.

CD APY 5.50%: HYSA $10,400.00, CD $10,550.00, CD wins by $117.00 after tax. A full point of extra yield triples the CD’s after-tax lead.

Term 5 years: HYSA $12,166.53, CD $12,461.82, CD wins by $230.33 after tax. Give the half-point gap five years to compound and the lead grows to more than five times the one-year after-tax gap.

Term 3 years: HYSA $11,248.64, CD $11,411.66, CD wins by $127.16 after tax. Three years is enough for compounding to more than triple the one-year lead.

Penalty 6 months, early withdrawal at 6 months: CD net −$2.48, CD value $9,997.52 (below the $10,000.00 deposit) | HYSA value $10,198.04 | HYSA wins by $200.52. The 6-month penalty of $225.00 eats all $222.52 of accrued interest and $2.48 of principal — you come out with less than you put in.

Tax 0%: after-tax gap $50.00 — with no tax, the after-tax gap equals the pre-tax gap and the CD still wins. Tax 37%: after-tax gap $31.50 — a higher rate shrinks the gap but cannot change the winner, because both accounts are taxed the same way.

The reverses, worked backwards

CD APY for a $100 pre-tax gap over 1 year: exact 5.0000%; displayed 5.00% → pre-tax gap $100.00. At 5.00%: HYSA $10,400.00 (interest $400.00, after-tax $312.00, after-tax value $10,312.00) | CD $10,500.00 (interest $500.00, after-tax $390.00, after-tax value $10,390.00) | CD wins by $78.00 after tax ($100.00 pre-tax). At 4.99%: HYSA $10,400.00 (interest $400.00, after-tax $312.00, after-tax value $10,312.00) | CD $10,499.00 (interest $499.00, after-tax $389.22, after-tax value $10,389.22) | CD wins by $77.22 after tax ($99.00 pre-tax) — the pre-tax gap is $99.00. The star is a PERCENT.

Deposit for a $500 pre-tax gap over 5 years: exact $16932.4868; displayed $16,932.49 → pre-tax gap $500.00. At $16,932.49: HYSA $20,600.96 (interest $3,668.47, after-tax $2,861.41, after-tax value $19,793.90) | CD $21,100.96 (interest $4,168.47, after-tax $3,251.41, after-tax value $20,183.90) | CD wins by $390.00 after tax ($500.00 pre-tax). One dollar less, $16,931.49: HYSA $20,599.75 (interest $3,668.26, after-tax $2,861.24, after-tax value $19,792.73) | CD $21,099.72 (interest $4,168.23, after-tax $3,251.22, after-tax value $20,182.71) | CD wins by $389.98 after tax ($499.97 pre-tax) — the pre-tax gap is $499.97. This reverse is CONTINUOUS: the gap rises smoothly with the deposit, so there is no smallest step that flips it — the displayed value is simply the rounded answer. The star is DOLLARS.

Term for a $100 after-tax gap: exact 2.4172 years; displayed 2.42 years → after-tax gap $100.13. At 2.42 years: HYSA $10,995.64 (interest $995.64, after-tax $776.60, after-tax value $10,776.60) | CD $11,124.01 (interest $1,124.01, after-tax $876.73, after-tax value $10,876.73) | CD wins by $100.13 after tax ($128.37 pre-tax). At 2.41 years: HYSA $10,991.33 (interest $991.33, after-tax $773.24, after-tax value $10,773.24) | CD $11,119.12 (interest $1,119.12, after-tax $872.91, after-tax value $10,872.91) | CD wins by $99.67 after tax ($127.79 pre-tax) — the after-tax gap is $99.67. This reverse is CONTINUOUS. The star is YEARS.

Earliest month the CD beats the HYSA after the 3-month penalty: exact 25.7432 months; displayed 26 months — the first whole month the CD is ahead. At month 25: CD accrued $960.38, penalty $112.50, CD net $847.88, CD value $10,847.88 | HYSA accrued $851.41, HYSA value $10,851.41 | HYSA wins by $3.53. At month 26: CD accrued $1,000.66, penalty $112.50, CD net $888.16, CD value $10,888.16 | HYSA accrued $886.93, HYSA value $10,886.93 | CD wins by $1.23. At month 27: CD accrued $1,041.08, penalty $112.50, CD net $928.58, CD value $10,928.58 | HYSA accrued $922.57, HYSA value $10,922.57 | CD wins by $6.01. The star is MONTHS.

HYSA APY for a $200 pre-tax gap over 3 years: exact 3.8859%; displayed 3.89% → pre-tax gap $198.68. At 3.89%: HYSA $11,212.98 (interest $1,212.98, after-tax $946.13, after-tax value $10,946.13) | CD $11,411.66 (interest $1,411.66, after-tax $1,101.10, after-tax value $11,101.10) | CD wins by $154.97 after tax ($198.68 pre-tax). At 3.88%: HYSA $11,209.75 (interest $1,209.75, after-tax $943.60, after-tax value $10,943.60) | CD $11,411.66 (interest $1,411.66, after-tax $1,101.10, after-tax value $11,101.10) | CD wins by $157.50 after tax ($201.91 pre-tax) — the pre-tax gap is $201.91. The star is a PERCENT.

Term for the CD to win by $1,000 pre-tax on a $25,000 deposit: exact 6.3917 years; displayed 6.39 years → pre-tax gap $999.65. At 6.39 years: HYSA $32,120.56 (interest $7,120.56, after-tax $5,554.03, after-tax value $30,554.03) | CD $33,120.21 (interest $8,120.21, after-tax $6,333.77, after-tax value $31,333.77) | CD wins by $779.74 after tax ($999.65 pre-tax). At 6.38 years: HYSA $32,107.96 (interest $7,107.96, after-tax $5,544.21, after-tax value $30,544.21) | CD $33,105.64 (interest $8,105.64, after-tax $6,322.40, after-tax value $31,322.40) | CD wins by $778.19 after tax ($997.68 pre-tax) — the pre-tax gap is $997.68. This reverse is CONTINUOUS. The star is YEARS.

What the defaults assume

Both accounts earn the same tax treatment, so the tax rate changes the numbers, not the winner. With no deposit at all (HYSA $0.00 (interest $0.00, after-tax $0.00, after-tax value $0.00) | CD $0.00 (interest $0.00, after-tax $0.00, after-tax value $0.00) | Tie ($0.00 pre-tax)) both sides are $0.00 — a TIE, because there is nothing to earn interest on. With no term at all (HYSA $10,000.00 (interest $0.00, after-tax $0.00, after-tax value $10,000.00) | CD $10,000.00 (interest $0.00, after-tax $0.00, after-tax value $10,000.00) | Tie ($0.00 pre-tax)) both sides are $10,000.00 — a TIE, because no time has passed for interest to accrue. With equal APYs of 4.50% over 5 years (HYSA $12,461.82 (interest $2,461.82, after-tax $1,920.22, after-tax value $11,920.22) | CD $12,461.82 (interest $2,461.82, after-tax $1,920.22, after-tax value $11,920.22) | Tie ($0.00 pre-tax)) both sides are $12,461.82 — a TIE. With a CD that pays nothing (HYSA $10,400.00 (interest $400.00, after-tax $312.00, after-tax value $10,312.00) | CD $10,000.00 (interest $0.00, after-tax $0.00, after-tax value $10,000.00) | HYSA wins by $312.00 after tax (−$400.00 pre-tax)) the HYSA wins by $400.00 before tax. With no penalty at all, an early withdrawal at 6 months (CD accrued $222.52, penalty $0.00, CD net $222.52, CD value $10,222.52 | HYSA accrued $198.04, HYSA value $10,198.04 | CD wins by $24.48) puts the CD ahead by $24.48 — without the penalty, the higher rate wins even early. With a HYSA that pays nothing (HYSA $10,000.00 (interest $0.00, after-tax $0.00, after-tax value $10,000.00) | CD $10,450.00 (interest $450.00, after-tax $351.00, after-tax value $10,351.00) | CD wins by $351.00 after tax ($450.00 pre-tax)) the CD wins by $450.00 before tax. And the 12-month early-withdrawal row is a model illustration, not a real maturity outcome: with the penalty applied at 12 months (CD accrued $450.00, penalty $112.50, CD net $337.50, CD value $10,337.50 | HYSA accrued $400.00, HYSA value $10,400.00 | HYSA wins by $62.50) the HYSA wins by $62.50 — but at maturity on a 1-year CD no penalty applies, so the real 12-month result is the CD at $10,450.00. Rounding convention: totals are computed from unrounded values, so rounded parts may differ by a cent from their rounded sum — and gaps are the difference of the displayed totals.

Output · formula · meaning

Who uses this

• The saver with $10,000.00 for a year: they learn the CD ends $39.00 ahead after tax — and they check the 6-month early-withdrawal figures, where the HYSA wins by $88.02, before locking the money up.
• The emergency-fund keeper: they learn a 6-month penalty can eat the whole 6 months of interest and $2.48 of principal — and they check the no-penalty edge, where the CD wins by $24.48 even at 6 months.
• The long-term saver with $25,000.00: they learn the CD’s lead grows to $97.50 after tax over one year and $230.33 over five years — and they check the term reverse, where 6.39 years on $25,000.00 makes the pre-tax gap $999.65.
• The higher-rate taxpayer: they learn the tax rate shrinks the gap from $50.00 to $31.50 at 37% but cannot change the winner — and they check the equal-APY branch, where the two accounts tie exactly.

Accuracy & limitations

The math is first-principles: future value = D·(1+APY)^n with annual compounding on the APY, interest = future value − deposit, after-tax interest = interest × (1 − tax), and the early-withdrawal penalty is simple interest on the deposit at the CD rate for the penalty months — every figure is rounded to cents half-up, totals are computed from unrounded values, so rounded parts may differ by a cent from their rounded sum, and gaps are the difference of the displayed totals (the unrounded early-withdrawal gap at 6 months is −$88.01, but the displayed gap — $10,110.02 − $10,198.04 — is −$88.02). What the model cannot do is predict YOUR rates: APYs change, banks pay different rates, and the tax treatment here is a single flat federal rate — state tax, account fees and rate changes during the term are not included; the CD penalty here is the simple months-of-interest form, while some banks charge a flat fee or a different number of months. Use it to compare the two accounts on the same numbers, then check the real rate and penalty schedule before you open either one.

Frequently asked questions