Most of the advice about retiring abroad is about the place — the coast, the cost of living, how long the winters feel. This is about the paperwork that gets on the plane with you, and the one thing that stays behind precisely when you will need it most.
Three things move in different directions when an American retires to Montenegro. Your Social Security payment generally follows you. Your obligation to the IRS certainly follows you. Your Medicare, in almost every practical sense, does not.
The rest of this is what each of those means, and the one gap between the two countries that has no bridge.
As always on the US side: I am not your US tax adviser and this is not that advice. What I can set out is the Montenegrin leg and the seam between the systems.
What does not follow you: Medicare
This is the point I would want an American to absorb before signing anything, because it is the one people assume works and it does not.
Medicare, in most situations, will not pay for health care or supplies you get outside the United States. "Outside the U.S." means anywhere other than the fifty states, the District of Columbia, Puerto Rico, the U.S. Virgin Islands, Guam, American Samoa and the Northern Mariana Islands.
There are limited exceptions under Part A and Part B, and none of them helps someone living in Montenegro. They are the near-border and transit cases: a medical emergency while you are in the U.S. where the closest hospital that can treat you is a foreign one; an emergency while travelling through Canada by the most direct route between Alaska and another state; and non-emergency care in a foreign hospital where you live in the U.S. and the nearest hospital to your home is across the border.
You can keep Medicare while living abroad. It simply will not usually pay for the care you actually receive. So health cover in Montenegro has to come from somewhere else — the state system or private insurance — and that is a decision to make before you go, not after a diagnosis. Montenegro's own system is a separate subject and we cover the mechanics of it here.
There is a second-order trap in the same area that is worth raising with a US adviser: the interaction between dropping or deferring Part B while abroad and the late-enrolment position if you ever move back. That is a US question with US consequences and it should be asked before you cancel anything.
What does follow you: the payment
US Social Security retirement benefits can generally be paid to beneficiaries living outside the United States. The restrictions are narrow and specific: US Treasury rules prohibit payment to people in Cuba and North Korea, and there are partial restrictions, with exceptions available in some cases, for a number of former Soviet states.
Montenegro is not among the prohibited destinations, and the SSA publishes a country-by-country screening tool — which is the right thing to check against your own facts rather than against an article. Where payments have been withheld because someone was in a restricted country, they can generally be recovered on moving somewhere payments are permitted.
The useful planning point is banking rather than entitlement: decide deliberately where the payment lands, because that choice interacts with the account-opening and reporting questions covered in paying for property and moving money.
What also follows you: the IRS
US citizens and permanent residents are taxed on worldwide income wherever they live. Retiring does not change that, and neither does moving. Your pension, your Social Security, your rental income from the apartment you just bought — the return still gets filed.
The reporting side is the part that catches retirees, because the thresholds are asset-based rather than income-based, and a retirement move usually involves opening accounts. The FBAR is triggered when your foreign accounts together exceed $10,000 at any point in the year, and Form 8938 has its own separate thresholds — which are higher if you live abroad. Both are set out in the American reporting side of owning here.
The gap with no bridge
Now the part that is specific to Montenegro and that most retirement guidance simply does not reach.
Under Montenegrin law an individual becomes tax resident if they have a domicile in Montenegro, or if their centre of personal and economic interests is situated there, or if they spend at least 183 days in the tax year in the country. A retiree who moves there properly will usually meet more than one of those tests, and quite quickly.
Montenegro's own rules provide that where a tax treaty exists, the treaty's residency rules take precedence over domestic law. That is the normal machinery: when two countries both consider you resident, the treaty's tie-breaker decides which one wins, and the treaty allocates taxing rights over pensions and government payments between them.
There is no such treaty between the United States and Montenegro. The IRS list of tax treaties contains no entry for Montenegro, and Montenegro's own treaty table contains no entry for the United States. Both checked on 19 August 2026, and set out in full in the article on that gap.
So for an American retiree there is no tie-breaker article, no pensions article allocating who taxes what, and no mutual agreement procedure if the two authorities reach different conclusions about the same income. Both systems can regard you as theirs, and the only relief mechanism is the unilateral foreign tax credit in US law — real, useful, and dependent on documentation and on your adviser's calculation rather than on a treaty rule.
For most people retiring from the US to Europe, a treaty quietly does this work in the background. Here it does not exist, and the planning that would otherwise be automatic has to be done deliberately.
| Follows you to Montenegro | Stays behind | |
|---|---|---|
| Social Security payment | yes, in most countries; Cuba and North Korea prohibited | — |
| US tax filing obligation | yes, worldwide income | — |
| FBAR / Form 8938 exposure | yes, and a move usually increases it | — |
| Medicare coverage | no, in almost every practical case | ✔ |
| Treaty protection against double taxation | does not exist for this pair | ✔ |
The year you move is the messy one
Residency questions are usually discussed as if you are either in one country or the other. The year you actually move is neither, and it is the year most likely to produce a disagreement.
In that year you may spend enough days in Montenegro to satisfy the day-count test while your centre of personal and economic interests is still visibly in the United States — or the reverse, if you sold the house first and then took your time arriving. Where a treaty exists, this is precisely the mess a tie-breaker article is built to resolve, in a defined order, with rules about permanent home and habitual abode. Between the United States and Montenegro there is no such article, so the mess simply stays a mess and each authority applies its own domestic test to the same twelve months.
What makes this manageable is unglamorous and entirely within your control: records. Dates of arrival and departure, when the lease or purchase completed, when utilities and bank accounts opened and closed, when the US home was sold or let. Those are the facts both tests turn on, and they are trivial to keep contemporaneously and painful to reconstruct three years later from memory and boarding passes.
If you can choose your timing at all — and retirees usually can, more than working people — the cleanest moves are the ones that put the break near the start of a tax year rather than in the middle of one. That is not advice about your situation; it is an observation about which years are easy to explain.
The residence permit is the easy part
I have deliberately left this until last, because it is the part people research first and it is the least likely to go wrong.
Montenegro has established routes to temporary residence, including on the basis of property ownership, and we cover the property route separately. It is administrative, it is well trodden, and it is not usually where a retirement plan fails.
Retirement plans fail on the two things above: health cover that turned out not to exist, and a tax position nobody modelled because everyone assumed a treaty was doing the work.
What I have not verified, and would not write
Two deliberate omissions.
I have not stated how Montenegro taxes a US pension or Social Security payment in the hands of a Montenegrin tax resident, because that turns on the classification of the income under Montenegrin law and I could not settle it from a primary text today. It is the single most important question for your situation and it should be answered specifically, in writing, before you become resident rather than after.
I have also not given figures for private health insurance or for the cost of joining the state system. They vary by age and by history, and a number in an article becomes a reason to stop asking.
The arithmetic
The costs here are asymmetric in an unusual way: the mistakes are cheap to prevent and cannot be corrected retrospectively.
Tax residency, once triggered by days and by the location of your life, is a matter of fact rather than of choice. Health cover arranged after a diagnosis is a different product at a different price, if it is available at all. Neither of those is fixed by hiring someone later.
Against that, an hour spent mapping the position before you move — while the day count is still zero and everyone is still healthy — is the cheapest hour in the plan. I will not quote a figure, and I would be wary of anyone who quotes one before knowing your circumstances.
What to send, and when
The useful moment is before the move, and ideally before the purchase. Send a note of where you expect to spend your days over the next two years, what your income sources are — Social Security, pension, rental, investment — and whether you intend to keep a home in the United States.
That is enough to say what Montenegro will consider you, what that triggers here, and what your US adviser needs to know while they can still act on it.
RoNa Legal advises foreign clients on Montenegrin law; representation before Montenegrin authorities and courts is conducted together with advocates entered in the register of the Bar Association of Montenegro. We don't take commission from sellers, agents or developers on property transactions — our fee is for the review. See our services or reach us through contact. Related: buying here as an American, what happens to the property when you die, and holding it personally or through a company.
