The Economics of Never Quite Living Anywhere

I was queueing for coffee in Lisbon behind a man who was colour-grading a sunset on the left half of his laptop screen. On the right half sat a spreadsheet with eleven tabs. I recognized it instantly, the way you recognize a relative in a stranger's face — the currency columns, the row for a storage unit on another continent, a cell that said only FLIGHTS (HOME), in red. I keep the same spreadsheet. Every serious wanderer does.

What most people miss about the wandering life of Homo mandralus is that it is a business, and like most businesses it is photographed at the shopfront and run from the back office. The sunsets are marketing. The spreadsheet is operations. The economics of never quite living anywhere are genuinely good — but only if you read every line item, including the ones that never appear in anyone's feed.

The arbitrage and its shadow

The engine of the enterprise is geo-arbitrage: earn in a strong currency, spend in a gentle one. Stated as an engineer would, it is a currency-pair trade in which the position is your life. A salary priced in dollars goes a long way in Lisbon, further in Mexico City, further still in Chiang Mai or Tbilisi. Nothing about this is new — retirees have done it for generations — but remote payroll turned a trickle into a migration corridor.

Here is the part the species mumbles: we change the neighbourhoods we perch in. When enough of us arrive earning in dollars, landlords do arithmetic — a long lease to a local teacher against short lets to laptop migrants — and the arithmetic wins. Locals have been priced outward in Lisbon's old quarters and in Mexico City's Roma and Condesa; menus switch languages before the residents do. I have been the marginal renter who moved the price, and pretending otherwise is poor accounting. The honest response is not guilt-flavoured paralysis. It is behaving like a resident rather than a tourist with a payroll: long leases, local markets, taxes paid where they are owed, money spent where the neighbours actually shop.

The 183-day folklore

At every co-working coffee machine, someone will cite the rule: stay under 183 days and you owe nothing. Treat this the way a naturalist treats a village legend — collected respectfully, believed cautiously. The number does descend from real residency tests, but countries count differently: some count partial days, some use rolling windows rather than calendar years, some run tax years that begin in April or July. And the day count is only the first gate. Many systems then ask where your permanent home is, where your 'centre of vital interests' lies, where your family sleeps; tax treaties break the ties, each in its own way. The United States, famously, taxes its citizens wherever on earth they sleep. India has amended its own residency thresholds more than once in the past decade.

So: none of this is advice, and anyone whose plan rests on a number overheard at a coffee machine deserves the audit they eventually get. Rules change; treaties differ; as of writing every claim in this section has an exception somewhere. Verify with a professional who does this for a living — ideally one per country you touch seriously. But keep the count regardless. A boarding-pass diary costs nothing and settles arguments with governments.

The price of the open door

The subtler drain is optionality. Never quite living anywhere means never quite deciding anything, and indecision is billed monthly. Two of everything: chargers, adapters, spectacles, a toiletry kit in each hemisphere. A storage unit holding furniture you can no longer describe. Insurance policies overlapping in two countries because neither fully trusts the other's hospitals. And flights home, which are never bought off a fare calendar, because weddings give six weeks' notice and funerals give none.

Optionality is a subscription: every door you keep open charges a monthly fee.

Against these costs the genus has evolved a folk economy: points and miles. It has everything a real economy has — a money supply, exchange rates, sudden devaluations announced without notice, and elders who speak of the old award charts the way farmers speak of the old rains. Played soberly, it is a genuine subsidy: the family flies forward on spending that was happening anyway. Played feverishly, it is a hobby that dresses up spending as earning. My rule, after years of both: miles are a spice, not a pension. They season the ledger; they must never be a line your plans depend on.

The other ledger

Then there is the ledger nobody exports to Excel. Friendship compounds like interest, and every move resets the principal. You know the grocer's name in three cities and miss the wedding in a fourth; your parents age in a time zone you visit; to your oldest friends you become the person who is always somewhere. What the life buys is real — perspective, options, the knack of reading a new city's systems in a week, children who think in maps rather than borders. What it costs is depth, on a compounding curve. Both sides of the trade are real, and the species lies to itself about whichever side it is currently losing.

So, the practical close. After years of running this ledger across three currencies, I believe every wanderer needs exactly three numbers, known cold:

1. Your true burn — a twelve-month average of everything: rents, storage, duplicates, insurance overlap, flights home. Not the best month's rent in the cheapest city. This is the number the sunsets hide.
2. Your day count — exact days in every country this year, taken from boarding passes rather than memory. It determines what you owe and to whom, and it is the one number you cannot reconstruct later.
3. Your standstill runway — how many months you could stop, in your most expensive plausible city, with income at zero, before wandering stops being a choice. Movement is not the luxury. The ability to stop is.

There is a fourth number, and no spreadsheet has a column for it: nights per year under the same roof as the people who would fly to you if things went wrong. When that number trends toward zero, the arbitrage has quietly inverted, and no currency pair on earth trades its way back.