"Am I saving enough? I'm 45, I make X, I have Y in savings. Am I on track?"
The honest answer is: it depends on too many things to tell you in a one-line reply. But the rules-of-thumb that get thrown around (the JP Morgan savings multiplier matrix, the Fidelity "10 times income at 67" guideline, the Vanguard percentages) are all wrong for the same reason. They answer the wrong question.
What the multipliers say#
JP Morgan Asset Management publishes a savings-by-income-multiple matrix that's widely circulated:
| Age | $50,000 | $100,000 | $200,000 | $300,000 |
|---|---|---|---|---|
| 35 | 0.9x | 2.0x | 3.0x | 3.5x |
| 40 | 1.6x | 2.9x | 4.2x | 4.8x |
| 45 | 2.5x | 4.0x | 5.5x | 6.2x |
| 50 | 3.5x | 5.3x | 7.1x | 8.0x |
| 55 | 4.7x | 6.9x | 9.1x | 10.1x |
| 60 | 6.2x | 8.8x | 11.4x | 12.6x |
| 65 | 8.1x | 11.3x | 14.5x | 16.0x |
Source: J.P. Morgan Asset Management.
The bottom-right corner is your target at retirement: roughly 16x your final income for high earners, 8x for lower earners.
So a 45-year-old earning $150,000 should have around 4.8x income saved, or $720,000. That's a useful sanity check. It tells you whether you're in the rough neighbourhood of "on track" versus "way behind."
But it doesn't answer the question you actually need to answer.
Why income multiples get FI wrong#
Three structural problems.
The denominator is wrong. Income multiples assume you spend a fixed percentage of your income, scaling proportionally. If you earn $200,000 and spend $180,000, you need a much bigger nest egg than someone who earns $200,000 and spends $80,000. The matrix can't tell the difference. The frugal high earner retires a decade before the high-spending high earner.
The geography is wrong. These matrices assume US-based retirement: US tax brackets, US life expectancy, US Social Security expectations, US cost of living. If you're an expat in Dubai, the math is completely different. If you plan to retire in the Philippines, even more different. A $720,000 portfolio funds 30 years in Cebu with margin to spare. The same $720,000 funds 12 years in Manhattan.
The timeline is wrong. The multipliers are built around traditional retirement at 65. Most FI people target a much earlier exit. The income multiple at 45 that "puts you on track" for a 65-year-old retirement is wildly short of what you'd need to retire at 50.
So the matrix is a sanity check, not a target. Treat it that way.
A better question#
The right question isn't "how much have I saved?" It's "what's my savings rate, and how long until that rate compounds into my FI number?"
This pivot changes everything because the savings rate is the only variable you fully control. You can't easily change your income overnight. You can't move the market. You absolutely can adjust how much of your paycheck stays.
The math, approximately (using 7% real returns on a 4% withdrawal rate):
| Savings rate | Years to FI |
|---|---|
| 10% | 51 |
| 20% | 37 |
| 30% | 28 |
| 40% | 22 |
| 50% | 17 |
| 60% | 12 |
| 70% | 8.5 |
Notice what this table doesn't depend on: your income. Doesn't matter if you earn $50,000 or $500,000. If you save 50% of it, you hit FI in roughly 17 years. The percentage is what matters.
Every percentage point you push your savings rate up shaves roughly a year off the FI timeline at the high end, and several months at the low end. There's no other lever in personal finance with that kind of leverage.
For the full mechanics, see the Savings Rate FIRE Guide and the Savings Rate Calculator.
The expat overlay#
If you're in the GCC, this calculation gets a tailwind. 0% income tax means a 50% savings rate is a real 50% savings rate, not a 50% post-tax savings rate that's actually 35% of gross.
If you're earning AED 30,000 a month and saving AED 15,000, you're banking AED 180,000 a year. An American counterpart earning the rough equivalent ($96,000 gross) and saving 50% post-tax is banking about $35,000 after federal and state taxes wipe out a third of gross.
Same effort, very different speed.
What to actually do#
Three steps, in order.
Calculate your current savings rate. Take everything you saved last year. 401k matches, brokerage deposits, the mortgage principal portion, everything. Divide by your gross income. That's your real number. Most people are surprised when they see it. It's almost always lower than they'd estimated.
Figure out your FI number. Use the FIRE calculator. Plug in your annual spending (not income, spending), your withdrawal rate, and any other income sources. The output is your target portfolio.
Use the savings rate table to estimate your timeline. Then ask the hard question: are you comfortable with that timeline? If yes, keep going. If no, the only honest answer is to push the savings rate up. There's no other lever.
The JP Morgan matrix is a sanity check. Your savings rate is the actual answer.
Start with the rate.
Chris