Find out when your age plus years of service add up to 75 — the "full retirement benefits" threshold used by many pension and retirement plans.
Under the Rule of 75, you qualify for full retirement benefits the moment your age plus your total years of service add up to 75 — for example, age 50 with 25 years of service, or age 55 with 20 years. It's a common threshold in roles where people start working later in life, like law enforcement or certain union jobs. Because every year you work pushes both your age and your service count up by one, your combined total grows by two each year — so the sooner you start, the sooner you qualify. This free calculator tells you exactly when you'll hit the Rule of 75.
The Rule of 75 says your age plus your years of service must total 75 before you can retire with full pension or retirement benefits. It's commonly found in plans where employees tend to start later, so the lower threshold gives them a realistic path to full benefits.
Every year you keep working, both your age and your service count climb by one — so your combined total rises by two each year. That means reaching 75 isn't about waiting until a fixed age; it's about the interaction between how long you've worked and how old you are.
For example: you're 48 with 20 years of service (total 68). You're 7 short of 75, and since your total grows by 2 per year, you'll qualify in 4 more years — at age 52 with 24 years of service.
If your plan uses a higher threshold, you'll need more combined age and service. The Rule of 80 (age + service = 80) qualifies you for full benefits later than the Rule of 75. Check your plan documents to confirm which rule applies. If yours uses 80, use our Rule of 80 calculator.
It means your age plus your total years of service must equal 75. Once they add up to 75, you're eligible for full retirement benefits under the plan — you don't have to wait for a fixed retirement age like 65.
Add your current age to your years of service. If the total is under 75, divide the shortfall by 2 (because your total grows by 2 every year) to find how many more years you need. Round up to get your eligibility age.
It's often used in law enforcement, firefighter, and certain union pension plans where employees tend to start their careers later. Many public-sector plans use the Rule of 80 or 85 instead. Always confirm your plan's specific formula.
Usually yes. Most plans allow early retirement at a lower monthly benefit, but the payments are permanently reduced. Waiting until your age-plus-service total reaches 75 (or your plan's threshold) gives you the full pension amount.