If you have never worked or paid Social Security taxes (or not paid them for long enough), you will not be eligible to receive Social Security retirement benefits on your own account. However, you may be eligible to receive benefits through your spouse's account if that spouse is eligible. You can file a claim under their account as early as age 62, just as long as your spouse has already filed to collect their own benefits.

You will also be able to apply for Medicare at age 65 as long as your spouse is at least 62. However, as with all Social Security retirement benefits, your age will affect the amount you can collect.

How the System Works Now

For many couples, both partners are eligible to collect individual benefits. However, this does not preclude either person from collecting under the other person's account. When you apply for benefits, both accounts will be checked to determine which claim will result in a higher benefit amount.

If you apply before you have reached full retirement age and your own benefit is larger, you will automatically be paid that amount. If your spousal benefit is larger, you will receive a combination of benefits that total that amount.

Either way, your benefit will be reduced by a certain percentage for each month benefits are collected before you reach full retirement age. The full retirement age is between 66 and 67, depending on your year of birth.

In addition, if you decide to claim before full retirement age, your benefit amount may be reduced if you choose to continue working, depending on how much you earn. Eligibility for government, foreign, or public service pensions may also affect your payments. On the other hand, if you are caring for a child who is age 16 or under and receives Social Security disability benefits, you may collect spousal benefits at any age without reduction.

If you wait until full retirement age to collect benefits, the maximum amount you can collect as a spouse is one half of your spouse's benefit amount. You are also entitled to your own benefit—whichever amount is higher.

Changes to the Social Security Law

Be aware of an important change in Social Security law that affects how you can collect spousal benefits. Notably, if you were born on or before Jan. 1, 1954, you may still be eligible to use a benefits-claiming strategy known as a "restricted application" that increases benefits. Younger recipients won't be able to use this strategy, which was ended by the Bipartisan Budget Act of 2015.

How the Restricted Application Works

If you reach full retirement age and are eligible for your own benefits as well as spousal benefits, you may choose to collect benefits under your spouse's account now and defer the collection of your own benefits. To file a restricted application, both you and your spouse must be of full retirement age, and you both must have already filed for Social Security benefits.

If you live long enough, filing a restricted application may result in a higher benefit amount when you later file for Social Security under your own account. The reason is you will have accrued delayed retirement credits for each year you defer retirement, up to age 70.

Each year of delayed retirement is worth an additional 8% in benefits for those born between 1943 and 1954. This means that a person born in 1947 who retires in 2016 at age 69 will receive an additional 24% over and above what he or she would have received had they begun collecting in 2013 at full retirement age. However, only one person per couple may collect spousal benefits while earning delayed retirement credits on his or her own account.

Ended: "File and Suspend"

This is a second Social Security claiming strategy for spouses that ended after April 30, 2015, due to the Bipartisan Budget Act. Using this strategy, the higher-earning spouse could file for Social Security at full retirement age (thus opening up the chance for his or her spouse to get spousal benefits), but then "suspend" his or her claim and not take benefits until they reached the higher amounts available to those deferring retirement up to age 70.

Applying for Spousal Benefits

You can apply for spousal benefits online at the Social Security Administration (SSA) website, over the phone, or by making an appointment at your local Social Security office. The SSA website also has links to information about the maximum amount you can earn while collecting benefits, updated requirements for application, and online calculators to help estimate your potential benefit amount.