MYGA vs CD After-Tax Calculator: State and Bracket Aware (2026)
TL;DR: CDs get taxed every year. MYGAs defer all gains until withdrawal. That single difference is worth $5K-$30K on a 5-year, $250K deposit for anyone in a 22%+ bracket. Higher brackets and state-income-tax states (especially California) widen the gap dramatically. Enter your state, bracket, and the two rates, and see the dollar advantage instantly.
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How this calculator works
Two different tax mechanics are at play:
CD math (taxed yearly):
Net = P × (1 + r×(1-t))^n
Every dollar of interest gets taxed in the year it's credited, so your effective compound rate is the gross rate times (1 minus your combined tax rate).
MYGA math (tax-deferred):
Gross = P × (1 + r)^n
Net = P + (Gross - P) × (1 - t)
The full nominal rate compounds untouched for the entire term. Only at withdrawal is the gain taxed, once, at your then-current bracket. You can also stagger withdrawals across years to manage bracket creep.
The combined tax rate t = federal + state. CA at the 9.3% bracket plus 24% federal = 33.3%; that's a brutal yearly haircut on CD interest, and exactly why deferral matters most in high-tax states.
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What the result means
The big number is MYGA's net dollar advantage over the same-deposit CD held for the same term, after all taxes are paid. Positive = MYGA wins. Negative = CD wins.
For most realistic scenarios in 2026, MYGA wins. The gap grows with:
- Tax bracket. A 12% bracket gets minimal benefit from deferral. A 32%+ bracket gets significant benefit.
- State tax. No-tax states (FL, TX, NV) cut the deferral edge in half. High-tax states (CA, NY top, NJ) amplify it.
- Term length. 3-year MYGA vs 3-year CD = modest advantage. 10-year MYGA vs 10-year CD = massive advantage because compounding has time to work.
- Rate spread. If the MYGA is already paying more than the CD (typical in 2026, 100-200 bps), the after-tax gap widens even further.
When MYGA wins / when the alternative wins
MYGA wins decisively when: CA / NY / NJ resident in a 24%+ federal bracket, 5+ year horizon, deposit $100K+. Common advantage: $15K-$50K over 5 years on $250K.
CD wins when: 0-12% federal bracket, no-state-tax state, term under 3 years. The deferral mechanic doesn't have enough room to overcome any rate gap.
Treasury ladder wins when: You're in CA/NY/OR top bracket AND need monthly cashflow you can't get from a deferred wrapper. State-tax exemption on Treasuries is its own form of "deferral", for state tax only.
Tie scenarios: 3-year horizon, 22% federal, ~5% state. Run the numbers exactly. Often the deciding factor isn't tax; it's whether you actually need the liquidity that the CD offers.
Worked example (illustrative rates)
Scenario: 67-year-old Sacramento retiree, $250,000 to park for 5 years.
- CD rate (5-yr brokered): 4.40%
- MYGA rate (5-yr, A-rated): 5.85%
- Federal bracket: 24%
- CA state: 9.3%
- Combined: 33.3%
CD after-tax: $250,000 × (1 + 0.044×0.667)^5 = $250,000 × (1.02935)^5 = $288,930. Gain = $38,930.
MYGA after-tax: Gross = $250,000 × 1.0585^5 = $332,460. Gain = $82,460. Tax = $82,460 × 0.333 = $27,460. Net = $250,000 + $55,000 = $305,000.
MYGA wins by $16,070, 6.4% of original principal, over 5 years. And if she stages withdrawals over 2-3 years to stay in the 22% bracket, that gap widens by another $4-6K.
Common mistakes
- Forgetting state tax. Federal-only comparisons make CDs look better than they are. CA, NY, NJ residents in particular get burned.
- Assuming "same rate" = "same outcome." Even at identical rates, MYGA wins on after-tax due to deferral compounding.
- Comparing CD to non-qualified MYGA when the money's in an IRA. Inside an IRA, both are already deferred, comparison is pure rate.
- Underestimating bracket creep at withdrawal. If you withdraw $80K of MYGA gain in one year, you may push into the next bracket. Stagger withdrawals across 2-3 years to manage this.
- Skipping the renewal-rate question on the MYGA. A "MYGA" with a 1-year guarantee and 4 years of renewals is not the same product; nominal rate doesn't lock.
Related calculators & reviews
- MYGA Growth Calculator
- MYGA Monthly Income Calculator
- Annuity Payout Calculator
- Social Security Bridge Calculator
- RMD + Annuity Calculator
Track the gap monthly: the MYGA vs CD Spread Index records the 5-year MYGA range from A-rated insurers against the top 5-year CD and the Treasury every month, with dated sources and a free CSV.
FAQ
Q: Is MYGA always better than a CD?
A: For taxable money held 3+ years by anyone in a 22%+ bracket, almost always. For under-3-year horizons or 0-12% brackets, CDs are competitive.
Q: How is California different?
A: CA has the highest state income tax in the nation (up to 13.3%). Every dollar of CD interest gets clipped twice (federal + CA). MYGA defers both clips until withdrawal, and you can stage withdrawals to lower-income years.
Q: What's the catch on the MYGA tax?
A: Withdrawals before age 59½ get a 10% IRS penalty on the gain portion. After 59½, just ordinary income tax on gains as they come out.
Q: Are MYGAs FDIC-insured?
A: No. MYGAs are insurance contracts backed by the carrier and state guaranty associations (typically $250K-$500K per carrier per state). FDIC covers CDs to $250K per bank per ownership category.
Q: Why not just use a Treasury ladder?
A: Treasuries are state-tax-exempt but federally taxed yearly. For CA top-bracket folks it is now close to a tie. On $250,000 over 5 years at 37% federal plus 13.3% California, an A-rated 5-year MYGA at 5.50% to 6.05% (public carrier rate sheets, October 14, 2026) ends at about $288,300 to $292,000 after tax at withdrawal, and a 5-year Treasury at 4.98% (U.S. Treasury, September 25, 2026) ends at about $291,800.
Q: Can I get a 10% withdrawal without penalty?
A: Yes, almost all MYGAs allow 10% of account value withdrawn per year free of surrender charge. IRS penalty on gain still applies if you're under 59½.
Q: Does the tax rate at withdrawal matter?
A: Yes. If you plan to withdraw in retirement when you're in a lower bracket, the deferral advantage grows. Many high-earners use MYGAs to time-shift income from peak-earning years to lower-bracket retirement years.
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Disclosure
This calculator is for educational and illustrative purposes only and is not a personalized recommendation, solicitation, or offer of any specific product. Outputs are approximations using publicly available rates, IRS tables, and standard payout factors as of 2026; actual carrier illustrations may differ. Annuity rates, caps, payout factors, surrender schedules, and tax brackets change frequently. Always confirm current values against the most recent carrier disclosure document, IRS Publication 590-B, and the actual contract before purchasing. Hans Goldstein is an independent licensed insurance producer (NPN 20602398) appointed with multiple A-rated carriers. Tax discussion reflects federal law as of 2026 and is subject to change. Consult a CPA and licensed advisor before acting on any output shown.