Benefit base versus account value: the number income riders really use

An annuity with a lifetime income rider keeps two separate numbers on your statement. The account value is what the contract is worth if you surrender it today, and it rises and falls with the investments or index credits inside. The benefit base, sometimes called the income base, is a bookkeeping figure that only the rider uses, to calculate how much income the insurer promises to pay you for life. The two can be far apart, and confusing them is one of the most common ways people misread what they own.

This post explains how the two numbers are built, how roll-ups and step-ups change one but not the other, what the base does and does not do, and what to check in your own contract. Every figure below is a hypothetical chosen for clean arithmetic. None is a real product's terms. For the rider itself, the guide to the guaranteed lifetime withdrawal benefit riders covers the basics; this post stays on the mechanics of the two numbers.

Two numbers, two jobs

A guaranteed lifetime withdrawal benefit is an optional rider attached to a deferred annuity, most often a variable annuity or a fixed indexed annuity. The rider is a separate promise stacked on top of the contract. The contract itself says: here is your account, here is how it earns, here is what you can take out. The rider says: if you follow certain rules, we will pay you a set amount each year for life, even if the account runs to zero.

To make that second promise, the insurer needs a number to multiply by a withdrawal percentage. It does not use the account value, because the account value can fall. If the guaranteed payment moved with the account, there would be no guarantee. So the rider invents its own number, the benefit base, and says: the guaranteed annual payment equals the withdrawal percentage times the benefit base.

The last row matters. Many riders charge their annual fee as a percentage of the benefit base rather than the account value. When the base is higher than the account, the fee as a share of your actual money is higher than the stated percentage.

How a benefit base starts and grows

At purchase the base normally equals the premium you paid. Put in $200,000 and the opening base is $200,000, the same as the account value. From there the two numbers are governed by different rules.

Three mechanisms can raise the base, and a contract may use one, two or all three.

Roll-up. The contract adds a stated percentage to the base each year during a deferral period, regardless of what the account does. A simple roll-up adds the same dollar amount each year, a percentage of the original premium. A compound roll-up adds a percentage of the larger and larger base. Many contracts stop the roll-up at a set number of years or at the first withdrawal, whichever comes first.

Step-up. On each contract anniversary, the insurer compares the account value with the base. If the account value is higher, the base is "stepped up" to match. The base can then ratchet up in good markets and never go back down, which is the appeal.

Additional premiums. If the contract allows extra deposits during an early window, they usually increase the base dollar for dollar.

Some contracts apply a "higher of" rule: on each anniversary the base becomes the larger of the rolled-up base and the account value. That is the design used in the example below.

A five-year illustration

Say a hypothetical buyer puts $200,000 into a variable annuity with a 5% simple roll-up and an annual step-up, on a "higher of" basis. The roll-up each year is 5% of the original $200,000, which is $10,000. The account value moves with the markets, and for illustration we assume these year-end values after all fees.

Read the table from left to right. In years 1 through 3 the roll-up is doing the work, and the base sits above the account. In year 4 the market recovers enough that the account value of $250,000 beats the roll-up of $240,000, so the base steps up to $250,000. In year 5 the account slips back to $238,000 and the base stays at $250,000, because a step-up does not reverse.

At the end of year 5 the buyer's contract is worth $238,000 in cash, before any surrender charge, while the benefit base is $250,000. The gap is $12,000. Neither number is wrong. They answer different questions.

Many contracts, in fact, calculate the roll-up on the stepped-up base after a step-up rather than on the original premium. That is a design choice that changes the table. If your contract compounds on the stepped-up base, the base will outrun the table above. This is exactly the kind of detail to read in the contract rather than infer from a brochure.

What the base buys: the income calculation

The guaranteed income is the withdrawal percentage times the base. The percentage is set by the age at which you start taking withdrawals, and often by whether the coverage is for one life or two. It typically rises with age. Say, hypothetically, the table in this contract reads 4.5% at age 62, 5% at age 65 and 6% at age 70 for a single life, and 4% to 5% for two lives.

If the buyer in the example starts at 65 with a $250,000 base on a single life:

• Guaranteed annual withdrawal: 5% × $250,000 = $12,500
• Per month: $12,500 ÷ 12 = about $1,042

If instead the buyer waits until 70, and in the interim the roll-up added a further five years (assume the roll-up period extends to year 10, so the base reaches $300,000 on the simple schedule):

• Guaranteed annual withdrawal: 6% × $300,000 = $18,000
• Per month: $18,000 ÷ 12 = $1,500

Waiting gave two raises: the base grew, and the percentage grew. The cost of waiting is five years of withdrawals not taken, and five more years of rider fees charged on a larger and larger base. That trade is the subject of when to switch on an annuity income rider: waiting or starting now.

Why the base is not a lump sum

This is where the confusion turns costly. A salesperson or a brochure may say the contract "guarantees 5% growth," or that the buyer has "$300,000 of guaranteed value." Both statements describe the benefit base. Neither describes money you can spend.

What the base really is:

• A multiplier. It exists to produce an annual payment. That is its only job.
• Not cash. If you surrender the contract, you receive the account value less any surrender charge (annuity surrender charges and free withdrawals explains the schedule), not the base.
• Not a death benefit. Under most riders the base ends at death. Beneficiaries generally receive the remaining account value under the contract's death benefit provisions, which may be zero if the account has been exhausted. See what happens to an annuity when you die.
• Not a return. A roll-up percentage is a contract formula applied to the base, not an investment return earned on your money. Sales material that blurs the two is a recurring source of complaints.

Think of a pension's "service credit," which is a number used to compute a monthly check at retirement but cannot be cashed out. The benefit base is the same kind of figure.

There is one more important limitation. Some contracts let you convert the base to a stream of payments through a separate annuitization option, and others do not. If your contract has such an option, the payout rate it uses is usually less generous than the rider's withdrawal percentage and may differ from the market. Ask directly, and get the answer in writing.

What happens when you take too much

The rider guarantee works only inside a set of rules, and the most important is the annual withdrawal limit. Take no more than the guaranteed amount in a year, and the base stays intact. Take more, and most contracts reduce the base, often proportionally.

Say the buyer above, with a $250,000 base and a 5% rate, may withdraw $12,500 a year. Account value is $200,000 when the buyer takes $30,000 for a roof repair.

1. Allowed withdrawal: $12,500.
2. Excess withdrawal: $30,000 − $12,500 = $17,500.
3. Account value after the allowed portion: $200,000 − $12,500 = $187,500.
4. Proportional reduction: $17,500 ÷ $187,500 = 9.33%.
5. Base reduction: 9.33% × $250,000 = about $23,333, leaving a new base of about $226,667.
6. New guaranteed annual income: 5% × $226,667 = about $11,333, down from $12,500.

An excess of $17,500 cost the buyer about $1,167 of guaranteed income every year for life, and the reduction is more severe when the account value is below the base. Had the account been $120,000, the same $17,500 excess would be compared with $107,500 and would cut the base by 16.3%. That is why a dollar-for-dollar mental model ("I took $17,500 too much, so I lose $17,500 of base") understates the damage in a down market.

Some contracts instead reduce the base dollar for dollar up to some limit. Others restrict withdrawals in a way that makes an excess impossible without a surrender charge. Read the withdrawal provision before you rely on the rider as an emergency source.

What happens when the account hits zero

The case the rider is built for is the one where the account value is depleted by withdrawals and fees over a long life. Say the account in the example falls to zero in the year the owner turns 84. At that point:

• The contract has no money left, so it behaves differently.
• The insurer keeps paying the guaranteed annual amount from its own funds, for as long as the owner (or, on joint coverage, the surviving spouse) lives.
• There is nothing left for beneficiaries beyond, at most, a minor residual provision.

The guaranteed payment may be the same as before or, in some designs, adjusted. The contract tells you. What does not change is that the payment depends on the insurer's ability to pay, which is why financial strength and state guaranty limits belong on the checklist for any purchase of this kind.

Fees: charged on one number, paid from the other

The rider charge is usually deducted from the account value, even if it is calculated on the benefit base. This produces a quiet drag. Say the rider fee is 1.00% a year of the base, and the base is $250,000. The fee is $2,500 a year. If the account value is $238,000, the effective charge on the money is $2,500 ÷ $238,000 = 1.05%. If the account falls to $150,000 while the base stays at $250,000, the same $2,500 is 1.67% of the account.

The fee, then, is paid from the number you can spend and sized by the number you cannot. A strong market lowers its effective bite; a weak one raises it. Together with the contract's insurance charges and fund expenses (see annuity fees, explained), this layering is why some owners find the account does not grow much even in decent markets.

Some contracts also reserve the right to raise the rider fee, up to a stated maximum, at step-ups. Check whether a step-up that raises the base can also raise the fee.

Joint coverage and the base

With joint (two-life) coverage the benefit base is the same figure, but the withdrawal percentage is usually lower, because the insurer expects to pay for longer. The coverage typically continues for the surviving spouse, who must often be named on the contract at the start and must meet age requirements. Two points deserve a close read:

1. Who is covered. Some contracts cover the spouse only if the spouse was named at the time withdrawals begin, and not if the couple divorces or the spouse is removed.
2. What happens at the first death. Most contracts keep the same dollar payment for the survivor, but some change the base or the percentage. Compare the joint and survivor annuity treatment in a plain income annuity, where the survivor percentage is chosen at purchase and fixed.

Questions to ask about your own contract

Take the contract, or the specimen contract the insurer will send on request, and find the answers to these:

1. Is the roll-up simple or compound, and on what base after a step-up?
2. How long does the roll-up last, and does it stop at the first withdrawal?
3. How often are step-ups tested, and can the fee rise when the base steps up?
4. What is the withdrawal percentage by starting age, for one life and for two?
5. What exactly reduces the base, and is the reduction proportional or dollar for dollar?
6. What does the rider fee apply to, and what is the maximum?
7. Are there investment restrictions while the rider is active?
8. What do beneficiaries receive at death?
9. Can the base ever be annuitized, and at what payout rate?
10. What happens to the rider if the contract is surrendered, partially or fully?

If the answers are vague, ask for the page number in the contract that supports each one.

How this compares with a plain income annuity

An immediate or deferred income annuity has no benefit base at all. You hand the insurer a premium and receive a payment, and the premium is gone. The rider structure gives you something different: you keep an account, you keep some access to the money, and the guarantee runs through the base. The price of that flexibility is the rider fee and, usually, a lower guaranteed payment for the same premium. an income rider on a deferred annuity versus a plain income annuity walks through that comparison, and the annuity payout calculator lets you try plain income figures against the rider's table.

Key takeaways

• The benefit base is a formula-driven number that sets the size of the lifetime payment. The account value is the contract's real worth. They are different and can diverge widely.
• Roll-ups and step-ups raise the base without adding a cent to the account, and the rider fee is usually charged on the larger number.
• The base cannot be withdrawn, surrendered or left to heirs; at death, beneficiaries generally receive account value, not base.
• Excess withdrawals often cut the base proportionally, which costs more than the dollars taken, especially when the account is below the base.
• Before buying or relying on a rider, ask for the roll-up terms, withdrawal percentages, fee basis and reduction rules in writing, and read them in the contract.