Social Security is frequently discussed as an individual retirement account, but this perspective misses the program's most powerful feature: its design as a comprehensive family safety net. For married couples, Social Security is not just a single stream of income; it is a coordinated family asset that requires a joint strategy to maximize. Understanding how spousal and survivor benefits interact is the difference between leaving hundreds of thousands of dollars on the table and securing a comfortable, inflation-protected lifestyle for both partners, regardless of who lives longer .

The Family Asset Mindset

When you approach Social Security as a couple, you are no longer just looking at your own work history. You are looking at a combined portfolio. This portfolio is unique because it offers "joint and survivor" protection similar to a traditional pension, but with the added benefit of annual Cost-of-Living Adjustments (COLAs) . On average, Social Security is designed to replace about 40% of a worker's pre-retirement earnings . However, for many couples, this percentage can be significantly higher when spousal benefits are factored in, especially if one partner had a lower-earning career or spent time out of the workforce to care for family.

The statistics are telling: about 1 in 4 Americans over the age of 65 rely on Social Security for at least 90% of their income . For a married couple, the risk of one partner outliving their savings is a primary concern. Longevity data from the Society of Actuaries suggests that for a 65-year-old couple today, there is a high probability that at least one person will survive into their 90s . Specifically, 1 in 4 65-year-old men will live to 93, and 1 in 4 women will live to 95 . This "joint longevity" is the reason why family-based strategies are so critical. You aren't just planning for your life expectancy; you are planning for the "last person standing."

Understanding the Primary Insurance Amount (PIA)

To build a family strategy, you must first understand the "Primary Insurance Amount" or PIA. This is the base monthly benefit you are entitled to if you claim at your Full Retirement Age (FRA) . Your FRA is determined by your birth year; for anyone born in 1960 or later, the FRA is 67 .

The PIA is the "magic number" from which all other family benefits are calculated:

Your Retirement Benefit: Based on your own 35 highest-earning years .
Spousal Benefit: Up to 50% of your partner's PIA .
Survivor Benefit: Up to 100% of what your partner was receiving (or was entitled to receive) at the time of their death .

The Power of Coordination

Coordinating benefits means deciding who claims when to ensure the highest total lifetime payout. This often involves a "split strategy," where the lower-earning spouse claims earlier to provide immediate cash flow, while the higher-earning spouse delays until age 70 to maximize the "delayed retirement credits" . For every year the higher earner waits past their FRA, their benefit increases by approximately 8% . This doesn't just help the higher earner; it permanently raises the floor for the survivor benefit that the other spouse will eventually inherit .

Table: The Impact of Claiming Age on Benefits (Born 1960+)

Claiming Age	Benefit Amount (% of PIA)	Why it Matters for Couples
62 (Early)	70%	Provides immediate income but permanently reduces survivor floor .
67 (FRA)	100%	The baseline for all spousal benefit calculations .
70 (Late)	124%	Maximizes the monthly check and the future survivor benefit .

The Role of Health and Longevity

While the math often favors waiting, personal factors like health history and immediate financial needs play a role. If both members of a couple have significant health issues and shorter life expectancies, claiming early (at age 62) might actually maximize the total dollars received from the system . However, if even one partner is healthy and comes from a long-lived family, the strategy usually shifts toward delaying the higher earner's benefit to protect the survivor .

As Ann Dowd, a CFP® at Fidelity, notes: "As people live longer, the risk of outliving their savings in retirement is a big concern. Maximizing Social Security is a key part of how couples can manage that risk" .

In the following sections, we will dive deep into the mechanics of spousal benefits, the protective nature of survivor benefits, and the specific step-by-step strategies couples can use to ensure they are making the most of this federal "family asset."