How do I know if I am on track for retirement?

Compare your current balance to age-based milestones: 1× salary by 30, 3× by 40, 6× by 50, 10× by 67 (Fidelity's framework). If you are meeting these, you are on a standard trajectory. For a more precise answer, model your retirement income needs: (annual spending in retirement) × 25 = target nest egg (the 4% withdrawal rule). Compare that target to what your current savings rate and timeline will produce.

What is the 4% rule and how do I use it?

The 4% rule (from the Trinity Study) suggests that withdrawing 4% of your portfolio in the first year of retirement, then adjusting for inflation annually, has historically sustained a 30-year retirement with very high probability. To find your target nest egg: estimate your annual retirement spending, subtract expected Social Security income, and multiply the remaining gap by 25. That is your savings target.

Is Social Security included in retirement calculations?

Yes — Social Security is meaningful income and should be included. You can get your estimated benefit at ssa.gov using your earnings history. Most retirement models use Social Security as one income component and savings/investments as the other. The gap Social Security does not cover is what your savings need to fund.

What if I start saving late — can I still retire comfortably?

Yes, with adjustment. Starting at 40 instead of 25 compresses the compounding runway but does not eliminate retirement security. It typically requires: higher contribution rates (20–25% of income), a later retirement age, reduced lifestyle expectations, or some combination. Working 3–5 extra years has enormous impact on both the size of the nest egg and the number of years it must fund.

What is a realistic retirement savings target?

A common target: 10–12× your final salary. For more precision: (annual expenses × 25) minus the present value of expected Social Security. A couple expecting $50,000 in annual expenses and $24,000 in Social Security needs their savings to generate $26,000/year — a nest egg of roughly $650,000 at a 4% withdrawal rate.

Am I on Track for Retirement?

The Two-Test Method

Test 1: Age-Based Milestones

Compare your current retirement savings to your salary using these benchmarks (Fidelity’s widely referenced framework):

Age	Retirement Savings Target
30	1× annual salary
35	2× annual salary
40	3× annual salary
45	4× annual salary
50	6× annual salary
55	7× annual salary
60	8× annual salary
67	10× annual salary

These assume you started saving early, maintain a 15% savings rate (including employer match), and retire around age 67.

Test 2: Income Needs Model

More precise: model what you actually need.

Step 1: Estimate your annual spending in retirement (many people use 70–80% of current income as a starting point).

Step 2: Get your projected Social Security benefit at ssa.gov.

Step 3: Subtract Social Security from annual spending — the difference is what your savings must fund.

Step 4: Multiply that gap by 25 (the 4% withdrawal rule).

Example:

Estimated retirement spending: $75,000/year
Expected Social Security: $28,000/year
Gap to fund from savings: $47,000/year
Savings target: $47,000 × 25 = $1,175,000

The 4% Rule

The 4% rule (from the Trinity Study by Bengen, 1994) says:

Withdraw 4% of your portfolio in year 1 of retirement, then adjust annually for inflation. A well-diversified portfolio has historically survived 30+ retirement years using this approach.

Reverse-engineering your target:

Savings needed = Annual income gap ÷ 0.04 = Annual income gap × 25

This is a widely used heuristic. It assumes a broadly diversified portfolio (equity and bonds), not cash savings.

What the Milestones Mean in Practice

If you are at or above the milestone: You are on the standard Fidelity trajectory and do not need to take emergency action. Maintain your savings rate.

If you are 20–30% below: You are behind but the gap is closeable. Increasing your savings rate by 2–3 percentage points now and capturing the full match will likely get you to the next milestone on schedule.

If you are more than 50% below: More significant adjustment is needed. Options: materially higher savings rate, later retirement target, reduced planned retirement spending, or some combination. This is worth a session with a fee-only financial planner to model.

The Math of Working More Years

One of the most powerful variables in retirement planning is retirement age — not just because it extends the savings window, but because it shortens the period the savings must fund.

Impact of retiring at 67 vs. 65 vs. 62:

Retirement Age	Working Years Remaining (from 40)	Approximate Balance Impact	Drawdown Period
62	22	Baseline	~25–30 years
65	25	~20% more	~20–25 years
67	27	~35% more	~18–22 years
70	30	~55% more	~15–20 years

Working 5 more years produces roughly 35–55% more savings while simultaneously reducing the number of years the money must fund. It is the most powerful adjustment available in retirement planning.

Visit ssa.gov/myaccount to see your projected benefit at various claiming ages. The difference between claiming at 62 vs. 70 is approximately 76% more monthly income, adjusted for inflation.

Rough monthly benefit comparison (for median earner):

Claim at 62: ~$1,400/month
Claim at 67 (full retirement age): ~$2,100/month
Claim at 70: ~$2,600/month

For most people with reasonable health, delaying Social Security to 70 (or at least to full retirement age) significantly reduces the amount their savings must provide.