- A split annuity divides one premium into a period-certain immediate annuity for current income and a deferred annuity sized to regrow to the original principal.
- The deferred slice is just present value: at 5% for 10 years, $306,957 grows back to $500,000 while the remaining $193,043 funds the income.
- Most of each income payment is untaxed return of principal under the exclusion ratio — the strategy's genuine tax edge over interest-only approaches.
- 'Your principal is preserved' means its nominal dollar amount — ten years of inflation is the cost the pitch omits.
- At the end of the term you face reinvestment risk on the restored principal at whatever rates then exist — the strategy is a decade-long rate bet, twice.
A split annuity — also sold as a split-funded annuity — is the rare annuity strategy whose entire mechanism fits in one sentence: divide a lump sum so that one piece, deferred at a guaranteed rate, grows back to the whole original amount by a chosen date, and annuitize the other piece for income until that date. Two ordinary contracts — a period-certain immediate annuity and a MYGA or fixed deferred annuity — arranged so the ending balance sheet looks like the beginning one, with a decade of paychecks in between.
The division is just present value
How much must be set aside today to become $500,000 in ten years at a guaranteed rate r? The present value: $500,000 ÷ (1+r)¹⁰. That's the deferred slice. Everything left over buys the income. At 5%, the deferred slice is $306,957, leaving $193,043 to fund ten years of payments — about $2,048 a month if the income slice also earns 5%. Here is the full table on $500,000 over ten years, with both slices earning the stated rate:
| Rate | Deferred slice (grows to $500k) | Income slice | Monthly income ×120 | Total income paid |
|---|---|---|---|---|
| 4% | $337,782 | $162,218 | $1,642.38 | $197,085 |
| 5% | $306,957 | $193,043 | $2,047.52 | $245,703 |
| 6% | $279,197 | $220,803 | $2,451.36 | $294,163 |
Read the 5% row honestly: you receive roughly $245,700 of payments over the decade and end with your $500,000 — which sounds like conjuring $245,700 from nothing until you notice it is simply the compound interest on half a million dollars at 5%, paid out as it accrues rather than left to compound. The split annuity manufactures no yield. It packages yield: guarantees it for the term, converts it into level monthly checks, and schedules the principal's return. Packaging is a real service. It is not alpha.
The genuine edge: how the income is taxed
In non-qualified money the packaging buys something concrete. Interest withdrawn from a CD or MYGA is taxed in full as it's earned. Payments from the period-certain SPIA are governed by the exclusion ratio: each check is treated mostly as untaxed return of your own principal, with only the interest portion taxable — on the 5% example, well over three-quarters of every payment arrives income-tax-free during the term. Meanwhile the deferred slice compounds untaxed until touched. The strategy front-loads spendable, lightly-taxed cash flow and back-loads the tax bill — genuinely useful for a retiree managing provisional income around Social Security taxation or IRMAA brackets in the gap years. The deferred slice's gains remain fully taxable eventually; the edge is timing and character during the income decade, not tax elimination.
What 'principal preserved' quietly omits
The restored $500,000 is a nominal quantity. At 3% inflation, the purchasing power returning to you in year ten is about $372,000 in today's terms; the level $2,048 payment thins the same way, month by month. This is not a flaw unique to splits — every fixed-dollar guarantee shares it — but the strategy's emotional engine is precisely the phrase 'you get it all back,' and the honest version reads 'you get all the dollars back.' Whether that matters depends on what the restored principal is for: as a legacy or a year-ten repricing war chest, nominal preservation may be exactly the job; as the sole engine of a thirty-year retirement, it is a slow leak dressed as a guarantee.
The second bet: year ten
When the term ends you hold the original sum in a rate environment nobody can predict. If rates fell, the next split (or MYGA, or SPIA) pays less — the strategy's income is guaranteed for exactly one decade, not for retirement. Splitters in effect run a ten-year bond ladder with an insurance wrapper and face the same reinvestment cliff every ladder faces. Mitigations exist: stagger two smaller splits five years apart, ladder the deferred slice across maturities, or treat the split as the bridge to a deferred income annuity purchased now for lifetime income later. Each trades simplicity for smoothing.
Split vs the boring alternative
The strict alternative is one MYGA with 10% free withdrawals: simpler, one contract, and the withdrawals can flex — but taxed as interest-first, unguaranteed as level income, and dependent on your discipline to leave principal alone. The split's superiority is behavioral and tax-mechanical, not mathematical: locked-in level checks the exclusion ratio favors, principal contractually unreachable until the date you chose. For the retiree who would otherwise nibble principal or freeze up spending interest, that structure is worth real money. For the disciplined spreadsheet-keeper, a MYGA plus a withdrawal plan replicates most of it with more flexibility. Which retiree you are is the actual question — the rest is present value.
Executing one well
Quote the two slices separately across carriers — the best SPIA writer and the best 10-year MYGA writer are rarely the same company, and bundled 'split annuity products' bake in convenience pricing. Confirm the deferred slice's rate is guaranteed for the full restoration term, not a teaser period. Check both carriers against your carrier ratings and guaranty limits — a split conveniently divides the premium across two names anyway. And run the whole design against its true benchmark: not zero, but the best boring alternative at today's rates. A split that wins that comparison is a fine strategy honestly bought.
Frequently asked
Want a split quote on your actual numbers?
Splits price off live SPIA and MYGA rates, which move weekly and vary by carrier. Send the amount and the term you're considering — we will run the real division at current rates, both slices from competing carriers, next to a single-MYGA-with-withdrawals alternative.
Book a Free Review →