The question most people can't answer honestly
Most people in their 50s and 60s have a general sense of whether they're doing okay — but very few can say with any precision whether their savings are actually on pace. They have a balance. They have a vague savings habit. What they don't have is a clear answer to the one question that matters: given where I am right now, will I get where I need to be?
This guide gives you the tools to answer that question with real math, not rules of thumb.
The core idea: compounding works on what you have, not just what you add
Here's the part that surprises most people: beyond a certain point, your current balance does more work than your monthly contributions.
Every dollar already saved is compounding today. Every new dollar you contribute joins that compounding machine. The further out you are from retirement, the more power your existing balance has. Two people saving the same percentage of income look completely different if one started early with a head start and one started late. The math is what separates them.
This means that asking "am I saving enough?" is the wrong question. The right question is: given my balance, my contributions, and my timeline, what number do I arrive at — and does it clear my target?
How the math works
Three inputs drive your retirement projection:
- Current balance — what you have today, across all retirement accounts
- Monthly contributions — what you're adding each month (including any employer match)
- Years to retirement — how many years you plan to keep working
A fourth input — expected annual growth — matters but is not something you control. Planning tools typically use 6–7% as a long-run assumption, which is a reasonable starting point.
A worked example
Here's a concrete scenario using the same math the calculator uses.
Starting point: Age 45. Current balance: $200,000. Monthly contribution: $1,000. Annual growth assumption: 7%. Target retirement age: 65.
Projected balance at 65: $1,265,883.
That's a specific number, not a range. If your inputs differ, your number differs — that's the point. A 40-year-old starting with $50,000 and saving $500 a month at the same rate arrives at $650,866. Same growth rate, same savings discipline, completely different answer — because the starting balance and timeline changed.
Run your own numbers. The calculator exists so you can see your actual trajectory, not a generic one.
What does your target need to be?
Before you can judge whether you're on track, you need a target. A common planning benchmark is the 4% rule: the idea that a retirement portfolio can sustain annual withdrawals of 4% of its balance over a 30-year retirement without running dry. By that math:
- Estimate your annual retirement spending
- Subtract your expected Social Security benefit (and any pension)
- Divide the remainder by 0.04
That gives you a target nest egg. Example: if you plan to spend $60,000 a year in retirement and Social Security will cover $24,000, your portfolio needs to fund $36,000 per year — requiring roughly $900,000.
The 4% rule is a planning heuristic, not a guarantee. But it's a useful stake in the ground that lets you compare your projected balance against a real target.
Benchmarks by age
Broad guidelines from financial planning research suggest having:
- 1× your annual salary saved by age 30
- 3× by age 40
- 6× by age 50
- 8× by age 60
- 10× by age 67
These are averages across a wide population — they carry no judgment about your situation. Your Social Security benefit, your planned retirement age, and your actual spending level will all shift your number. Use the benchmarks as a rough orientation, not a verdict.
The decision: what to do with the answer
Once you run your projection, you either clear your target or you don't. Both outcomes have a clear path forward.
If you're ahead: Good — but re-run the numbers at every significant life change. A job switch, a salary increase, an inheritance, a big expense. The projection is only as good as its inputs.
If you're behind: Three levers are available, and they're not equally powerful at every stage of life.
Lever 1: Contribute more. Earlier in your career, this compounds powerfully. An extra $200 a month at age 45, at 7% over 20 years, adds roughly $104,000 to your final balance. The same $200 at age 60 adds less than $30,000. Contributions still matter later — they just do less work.
Lever 2: Work longer. Two or three additional working years do double duty: they extend your accumulation period and shorten your withdrawal period. For someone in their late 50s, this is often the most powerful single lever available. Even one extra year can shift the picture meaningfully.
Lever 3: Adjust your target. This isn't about giving up — it's about being accurate. What do you actually plan to spend in retirement? Some people build their target around a percentage of current income, only to discover they'd spend considerably less (or more) than that. Run the spending estimate honestly before assuming you have a gap.
These three levers can be combined. A modest increase in contributions, a year of additional work, and a more accurate spending estimate can together close a gap that looks daunting when you're only looking at contributions alone.
Social Security is part of your income
Social Security reduces how much work your portfolio has to do. Every dollar of guaranteed monthly income in retirement is a dollar your savings don't have to produce. If you don't know your estimated benefit, it's worth looking it up — your earnings history and projected benefit are available from the Social Security Administration. Don't assume a round number.
Common mistakes
- Using rules of thumb without running the math. "Save 15% of income" doesn't account for your actual balance, your Social Security benefit, your retirement age, or your spending level. It's a starting point at best.
- Focusing only on contributions, ignoring the balance. People who obsess over their savings rate often miss that their existing balance has real compounding power. A $200,000 head start matters more than a marginally higher monthly contribution.
- Assuming retirement spending will be much lower. The early years of retirement often see the same or higher spending than during working years — travel, home projects, healthcare. Build a target based on what you actually plan to do.
- Treating the gap as fixed. If you're behind, the question isn't only "how do I save more?" — it's also "how long am I working?" and "what does retirement actually cost for me?" All three are variables.
- Waiting because the gap feels too large. The math doesn't reward paralysis. A partial correction that starts now compounds forward. The same correction that starts five years from now produces a smaller result.
Run your numbers →
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Next in Accumulation: The Account Map — 401(k), IRA, Roth, and taxable accounts explained
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