Dear Liz: If someone delays applying for Social Security after their full retirement age, the common thought is that their benefit grows by 8% a year until the age of 70. It accrues by that much only if you continue to work, right? I was unceremoniously laid off during the pandemic and I am holding off as long as I can before applying. I will be 67 at the end of this month. But because I am not working, that 8% is not a reality, right?

Answer: Wrong. The 8% delayed retirement credits apply whether you’re working or not. Those credits will help you maximize the benefit you receive for the rest of your life and potentially the rest of your spouse’s life, if you are the higher earner in a marriage. This effect is so powerful that many financial planners recommend their clients tap other resources, such as retirement funds, if it allows them to put off claiming Social Security.

It may help to think of retiring as a separate event from claiming Social Security. Many people link the two, but you can work while claiming Social Security or retire but delay Social Security.

If you did continue to work, your benefit might be increased somewhat by the additional earnings. This typically happens if you had a low-earning year included in the 35 highest-earning years that Social Security uses to calculate your benefit. If you had earned more in 2020 than in one of those previous years, then your 2020 earnings would replace that past year’s earnings in the formula and boost your benefit.

The 8% delayed retirement credit probably will have a much bigger effect on what you ultimately get, though, so don’t fret about any missed opportunities. Just try to delay your application as long as you can.

Dear Liz: The common assumption seems to be that, in most cases, it’s a good idea to delay collecting Social Security because the longer you wait, the higher your monthly benefits will be. I will reach my full retirement age of 66 years and 2 months in July. According to the Social Security Administration website, my monthly benefit would get bumped up if I waited to start collecting until 66 years and 8 months, next February. The next bump wouldn’t be for another full year, at 67 years and 8 months. My current plan is to retire in March or April of next year. Is there any reason I shouldn’t start collecting my benefit as soon as I get to the 66 years and 2 months threshold?

Answer: It’s not clear what you were looking at, but your Social Security benefit earns delayed retirement credits every month you put off your application after your full retirement age. Those credits add up to 8% annually and increase your checks for the rest of your life.

Social Security can be complicated, and making the right claiming decision isn’t always easy, but your choice can have a huge impact on your future financial security. Please consult a fee-only, fiduciary financial planner before you retire so you can be confident you’re doing the right thing.

Dear Liz: Having read your advice on Social Security numerous times, I’m having a heck of a time encouraging a friend who reached full retirement age last year to start collecting her benefits. She said her Social Security isn’t enough to live on and she needs to work two more years before collecting. She said if she waits to apply that it would increase her Social Security by $400 a month. I’ve informed her that she can both collect and continue to work without penalty because she has reached full retirement age. She also would still get an annual increase based on her earnings, in addition to the annual cost-of-living increase. She won’t let me know how much her Social Security would be now, and I haven’t asked, but I’ve told her this is extra money she could invest.

Answer: Are you sure you were reading this column?

Copious research shows that most people are better off waiting as long as possible to file for Social Security. Given life expectancies at 65, most who make it that far will live beyond the break-even age where the larger checks they’ll get will more than offset the smaller ones they pass up.

Waiting is particularly important for the higher earner in a couple, since that determines what the survivor gets to live on. Waiting is also important for single people, since they don’t have a partner’s income to help. Single women have an especially high risk of finishing their days in poverty, which means maximizing their Social Security is usually the right call.

Besides, there’s no risk-free investment that would guarantee her an 8% annual return. That’s what she’s getting by waiting to start her Social Security benefit (at least until age 70, when the benefit maxes out). She might be able to generate similar returns with stock market investments, but she also could lose her shirt.

Something else to consider: Benefits are based on our 35 highest-earning years. If she’s making more now than she did in one of those previous years, she could be boosting her benefit even more by continuing to work. People who took time off to raise families or who had a history of low wages or part-time work often see a bigger benefit by continuing to work as well as waiting to apply.

Dear Liz: My wife and I are both 63. She recently applied for Social Security. I will apply for mine when I am 70, at which time she will apply for a spousal payment, which will be half of mine. Last night as I was in bed I thought, “What if I die before 70?” Can she still wait until what would be my 70th year to collect my maximum benefit?

Answer: Your wife will get a larger survivor benefit because you delayed. If you die after she reaches 66 years and two months, however, she won’t get a larger check by waiting.

Social Security rules can be mind-numbingly complicated, and they’re different for different types of benefits, so this will take some explaining.

The three types of benefits that matter for this discussion are retirement benefits, which are based on your own earnings record; spousal benefits, which are based on a spouse’s earnings record while both partners are alive; and survivor benefits, which are based on a spouse’s earnings record after his or her death.

These benefits may be reduced if you start them before your “full retirement age,” which is different for survivor benefits than for retirement and spousal benefits, said William Meyer, founder of Social Security Solutions, a claiming-strategies site.

If your wife was born in 1957, then her full retirement age for retirement or spousal benefits is 66 years and 6 months. For survivor benefits, it’s 66 years and 2 months.

The full retirement age for retirement and spousal benefits is 66 for those born between 1943 and 1954. People born between 1955 and 1959 have full retirement ages ranging from 66 and 2 months to 66 and 10 months. Those born in 1960 and later have a full retirement age for retirement benefits of 67.

With survivor benefits, the schedule is pushed back two years. Survivors born between 1945 and 1956 have a full retirement age of 66. Survivors born from 1957 to 1961 have full retirement ages ranging from 66 and 2 months to 66 and 10 months. Survivors born in 1962 and later have full retirement ages of 67.

The reason you’re waiting to start retirement benefits until 70 is probably because you know your benefit will increase 8% for each year you delay between your own full retirement age and 70, when retirement benefits max out. The 8% per year increases are called delayed retirement credits. As you likely know, delaying is particularly important for the higher earner in a couple because that benefit determines what the survivor gets.

If you start retirement benefits before your full retirement age, your wife’s survivor benefit will be based on what you would have gotten at your full retirement age. If you delay your retirement benefits beyond your full retirement age, your wife’s survivor benefit will reflect any delayed retirement credits you have earned.

Your retirement benefit doesn’t earn delayed retirement credits after you’re dead, however. And your wife won’t earn delayed retirement credits on her survivor benefit. Once she reaches her full retirement age for survivor benefits, there’s no point in further delaying her switch from her retirement benefit to her survivor benefit.

Delayed retirement credits also don’t apply to spousal benefits. Her maximum spousal benefit would be half of your benefit amount as of your full retirement age. Because she started her own benefit early, however, her spousal benefit would be reduced.

The penalties for starting early are significant enough that it’s usually best to wait, and your wife may still have a “do over” option. If it’s been less than 12 months since she applied for benefits, she can repay any benefits she received and withdraw her application. That will undo her previous claiming decision and allow her benefit to keep growing. The claiming calculators and experts at Social Security Solutions and Maximize My Social Security can help you determine if that might be the best course.

Liz Weston, Certified Financial Planner, is a personal finance columnist for NerdWallet. Questions may be sent to her at 3940 Laurel Canyon, No. 238, Studio City, CA 91604, or by using the “Contact” form at asklizweston.com.