What Is a Monthly Annuity and How Does It Work?

A monthly annuity is a contract with an insurance company that converts money you pay in, either as a lump sum or over time, into guaranteed monthly income for a fixed number of years or for the rest of your life. You transfer money to the insurer now, and the insurer takes on the risk that you might outlive your savings. Federal tax law under Internal Revenue Code Section 72 governs how the money grows tax-deferred inside the contract and how each monthly payment is taxed when it reaches you.¹

The Two Phases That Make It Work

Every annuity moves through two stages, and the mechanics of the product only make sense once you see both.

The first is the accumulation phase. You add money to the contract, and the insurer credits interest or investment returns according to the type of annuity you own. Earnings inside the contract are not taxed as they accrue; tax is deferred until you take money out.¹ The tradeoff for that deferral is a penalty for pulling earnings out before age 59½: the IRS adds a 10% tax on top of ordinary income tax, with exceptions for disability, death, and substantially equal periodic payments spread over your life expectancy.²

The second is the annuitization phase. When you tell the insurer to start paying you, you make an annuitization election. Once the first payment goes out, the decision generally cannot be reversed. You give up access to the lump sum, and in exchange the insurer takes on a contractual obligation to send you a check every month according to the payout terms you chose. The amount, the duration, and any survivor benefits all lock in at that moment.

Some annuities skip the first phase entirely. A single premium immediate annuity takes one lump-sum payment, commonly starting around $25,000, and moves directly into paying you, usually within 30 days.

Types of Monthly Annuities

How the money grows during accumulation depends on which of three main types you buy.

Fixed annuities credit a guaranteed minimum interest rate. The rate may adjust over time but will never fall below the contractual floor. This is the most conservative option.
Fixed indexed annuities tie your interest to a market benchmark like the S&P 500. If the index gains, you receive a portion of that gain; if it drops, your credited interest cannot go below zero, so your principal is protected from market losses. Caps and participation rates limit how much of the upside you actually keep.
Variable annuities let you direct contributions into a menu of mutual fund-like investment options. Returns depend on those funds, with no floor protecting you from losses. Variable annuities are regulated by both state insurance commissions and the SEC because they carry investment risk similar to securities.³

Any of the three can be structured to pay monthly income.² The choice comes down to how much risk you’re willing to carry and whether predictability or growth potential matters more.

Payout Options That Shape Your Monthly Check

The structure you choose at annuitization decides both the size of your monthly payment and what happens to the balance if you die early.

Life only pays as long as you live and stops at your death. Because the insurer owes nothing to a beneficiary, this option produces the largest monthly payment.
Period certain guarantees payments for a fixed number of years, commonly 10 or 20. If you die during that period, your beneficiary receives the remaining payments. The added protection means a smaller monthly check than life-only.
Life with period certain pays for your lifetime but guarantees a minimum number of years to a beneficiary if you die early.
Joint and survivor pays over two lives, typically yours and your spouse’s. After the first person dies, the survivor keeps receiving a percentage of the original payment, usually 50% to 100%. The higher the survivor percentage, the lower the starting check.⁴

The differences are significant. A life-only annuity for a 70-year-old might pay 30% to 40% more per month than a joint-and-survivor version with a 100% survivor benefit, because the insurer could be paying over two lifetimes instead of one.

What Determines the Size of Your Payment

Your age at annuitization is the single biggest factor. Older annuitants receive larger monthly payments because the insurer expects fewer total payments. The prevailing interest rate environment matters almost as much: when rates are high, insurers earn more on the reserves backing your income, and that shows up in higher checks. Lock in during a low-rate period and the payments stay low for life.

Gender affects individual annuity pricing outside of employer-sponsored plans. Women statistically live longer, so an insurer expects to pay them longer, which produces slightly smaller monthly amounts compared with men of the same age.

The amount you contribute obviously matters, and so does the payout option. A life-only election on a $200,000 contract will produce a meaningfully larger check than a joint-and-survivor election on the same amount. Some contracts offer inflation-protection riders that increase your payment by a fixed percentage each year, typically 1% to 5%, but choosing that rider reduces your starting payment because the insurer commits to rising costs over time.

How Monthly Payments Are Taxed

Tax treatment depends on whether the annuity was funded with pre-tax or after-tax dollars.

Qualified Annuities

A qualified annuity sits inside a tax-advantaged retirement account like a traditional IRA, 401(k), or 403(b). Because those contributions went in pre-tax, every dollar of each monthly payment is ordinary income and fully taxable.⁵

Qualified annuities are also subject to required minimum distributions. You generally must begin withdrawals by April 1 of the year after you turn 73, with each subsequent year’s deadline falling on December 31. Missing an RMD triggers a steep penalty, so if you hold a deferred annuity inside a qualified account without annuitizing, keep the calendar in mind.⁶

Non-Qualified Annuities

A non-qualified annuity is bought with after-tax money outside a retirement plan. Because you’ve already been taxed on the premiums, the portion of each payment that represents a return of your original investment is tax-free. The IRS uses an exclusion ratio to split each payment: your total investment divided by the expected return over the payout period.¹ If you invested $120,000 and the expected return is $200,000, 60% of each monthly payment is tax-free. Once you’ve recovered your full original investment, every subsequent payment becomes fully taxable.

Early Withdrawal Penalty

Qualified or not, taking earnings out before age 59½ generally triggers a 10% additional tax on the taxable portion. For non-qualified annuities, this penalty sits under IRC Section 72(q). Exceptions include disability, death, and substantially equal periodic payments over your life expectancy. Immediate annuities that begin paying right away are exempt from the penalty.¹

Fees to Watch

Fees can quietly erode returns. The specific charges depend on the type of annuity.

Surrender charges apply when you withdraw more than the annual free amount during the early years. A typical schedule starts around 7% in year one and drops by about one percentage point a year until reaching zero, often after seven or eight years. Some contracts let you take up to 10% of your account value each year without penalty.

Variable annuities carry a mortality and expense risk charge, commonly around 1.25% of account value per year, plus fees on the underlying investment options similar to mutual fund expense ratios.³

Optional riders for guaranteed lifetime income, enhanced death benefits, or long-term care coverage typically add 0.25% to 1% of contract value per year. Stacking several riders on a single contract can push total annual fees above 3%.

Some fixed and fixed indexed annuities also include a market value adjustment. If you withdraw more than the free amount during the surrender period and interest rates have risen since you bought the contract, the MVA reduces what you receive. If rates have fallen, the adjustment works in your favor. It sits on top of the surrender charge.

Protections for the Buyer

Two safeguards protect annuity buyers from the most serious risks: changing your mind and insurer failure.

The free-look period lets you cancel the contract for a full refund after receiving it. The NAIC’s model regulation sets a minimum of 15 days when disclosure documents were not provided at the time of application, and most states have adopted similar or longer windows, typically 10 to 30 days.⁷ Some states extend the period for replacement transactions or for older buyers. If you have doubts after reading the full contract, this is the only window in which walking away costs nothing.

If the insurer that issued your annuity becomes insolvent, state guaranty associations step in. Every state maintains one, and in most states the coverage limit for annuity benefits is $250,000 in present value per contract holder per insurer. Some states cap total coverage across all policies with the same failed insurer at $300,000. Spreading large annuity purchases across multiple highly rated insurers can reduce exposure to any single company’s failure.

What Happens if You Die

The result depends on the type of annuity and the timing.

For non-qualified annuities, IRC Section 72(s) requires that if the owner dies before the annuity starting date, the remaining value must be distributed within five years. A designated beneficiary can instead stretch distributions over their own life expectancy if payments begin within one year of the owner’s death. A surviving spouse who is the beneficiary can step into the owner’s shoes and continue the contract as their own.¹

If the owner dies after annuitization has begun, the payout option dictates the outcome. A life-only annuity stops with no remaining value. A period-certain or joint-and-survivor arrangement continues paying the beneficiary or surviving annuitant according to the contract.

Buying a Monthly Annuity

You can fund an annuity two ways. A single premium immediate annuity takes one lump sum and starts monthly payments quickly, usually within 30 days. It’s a common choice for retirees converting a portion of a 401(k) rollover or savings into a guaranteed paycheck. A deferred annuity lets you make flexible payments over months or years, building value during accumulation before you eventually elect to annuitize; this works for people still in their working years who want to supplement other retirement savings.

The application requires personal identification, tax information, and disclosure of where your funds are coming from. Before signing, look closely at two provisions: the surrender charge schedule, and the free-look period. Once the insurer approves the application and receives your premium, the contract becomes effective and the terms lock in.

1
Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts
2
Investor.gov. Annuities
3
U.S. Securities and Exchange Commission. Variable Annuities: What You Should Know
4
Internal Revenue Service. Retirement Topics – Qualified Joint and Survivor Annuity
5
Internal Revenue Service. Topic No. 410, Pensions and Annuities
6
Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs)
7
National Association of Insurance Commissioners. Annuity Disclosure Model Regulation