What counts in 'real hourly rate'?
Your salary divided by 40 hours/week is your nominal rate. Your real rate deducts: commute time (both directions), time spent getting ready for work, work-related expenses (transit, parking, work clothes, meals), and unpaid overtime. The framework comes from Vicki Robin & Joe Dominguez's 'Your Money or Your Life' (1992, revised 2018) — the foundational FI text that defined 'life energy' as the right unit for evaluating expenses. For many people, the real rate is 30–50% lower than the nominal once everything's counted.
When does living closer to work actually pay off?
It depends on the rent premium vs your commute cost. If the shorter-commute apartment costs $400/month more, and your commute currently costs you 2 hours/day × your hourly value — run the commute cost calculator with your numbers. The crossover point is often sooner than people expect.
How does procrastination cost money?
Compound interest is why. $500/month invested for 30 years at 7% grows to ~$567,000. Start 5 years later, and you only get ~$378,000 — a $189,000 difference. The money you didn't invest during those 5 years only cost you $30,000 in missed contributions, but the lost compounding cost you $159,000 more.
Does working from home really save that much?
Yes — typically $5,000-12,000/year for a US household, with employer-side savings of similar magnitude (Stanford WFH Research led by Nicholas Bloom and Global Workplace Analytics estimates converge on this range). Direct savings: gas/transit ($1,500-3,000), work lunches ($1,500-2,500), professional wardrobe ($500-1,500). Plus reclaimed time: 250 commute hours/year × pre-tax hourly rate is often $5,000-10,000 in time value. The full savings appear when you also factor in the smaller home cost (no need to live near a downtown office).
Is taking a 1-year sabbatical actually affordable?
The headline number is misleading. The real cost of a 12-month sabbatical isn't just 'cash burn during the year' — it's also the forgone earnings, the lost 401(k) match, the compounding on what you didn't invest, and the post-sabbatical re-entry friction (some industries discount returners). Sabbatical ROI computes all four components honestly. For most knowledge workers, a year off costs roughly 1.5–2× their annual salary in lifetime wealth — but the right framing isn't 'affordable yes/no,' it's 'worth it for what?'
Same salary in a cheaper city — is geo arbitrage actually real?
For remote workers, yes, and the compounding is dramatic. Moving from SF ($110K COL adjusted) to Austin (~$80K equivalent) preserves the same lifestyle and frees up $30K/year of savings — figures derived from the Bureau of Economic Analysis Regional Price Parities (RPP) dataset, the official US metric for cross-city purchasing power. At 7% return over 10 years that's roughly $415K more in your portfolio — without earning a single dollar more. The Geo Arbitrage Calculator runs your specific salary against city COL indexes, including state tax differences (per Tax Foundation state-level data) which most online calculators silently skip.
Living abroad as a US citizen — do I really owe tax to the IRS?
Yes, US persons file globally regardless of where they live. But you can usually get to near-zero federal tax via two stackable mechanisms: Foreign Earned Income Exclusion (FEIE, $120K+ for 2025) and Foreign Tax Credit (FTC) if the host country taxes you. The trap most digital nomads miss is state tax — California, New York, and a few others keep claiming you until you formally sever residency. Digital Nomad Tax models all three (FEIE + FTC + state claim) to show your real burden, not the optimistic version.