When Do Foreigners Become Tax Residents in Colombia? The 183-Day Rule

Most foreigners think about residency in Colombia as a visa question: which category, which threshold, which documents. The tax authority, DIAN (Dirección de Impuestos y Aduanas Nacionales), works from a different question altogether. It counts days. Once the count crosses the line, the scope of what Colombia can tax changes, and it changes whether or not you ever applied for anything.

The question gets urgent at year-end. Someone who arrived mid-year and is deciding whether to stay into the first quarter is also deciding which side of the line next year falls on.

What Article 10 actually says

Tax residency for individuals is defined in Article 10 of the Estatuto Tributario, Colombia’s national tax code. For a foreigner, the test that matters is the first one, the presence test. In DIAN’s own summary of the article (checked October 2026):

• You are a tax resident if you stay in Colombia for more than 183 calendar days, continuously or not, within any period of 365 consecutive calendar days.
• The days you arrive and the days you leave count as days in the country.
• If the qualifying stay runs across more than one tax year, you are treated as resident from the second tax year.

The article has two other branches. One covers people serving in Colombia’s foreign service. The other covers Colombian nationals, who can be residents without meeting the day count — for example when a spouse, permanent partner or dependent minor children are Colombian tax residents, or when at least half of their income or assets are in Colombia — unless at least half their income or assets sit in the country where they actually live. Those tests are written for nationals. For a foreigner without Colombian nationality, the day count is the test.

The rule is also less flexible than people hope. A 2020 DIAN opinion confirmed the presence test kept running through the COVID-19 emergency: it is a rule about facts, not a deadline that could be suspended.

How the 183 days are counted

Three features of the wording catch people out.

1. “Any” 365-day period. The window rolls. It is not the calendar year. Four months in the autumn and three in the following spring can add up even when neither calendar year looks heavy on its own.
2. Continuous or not. Leaving for a week does not reset anything. Trips abroad pause the count; the days you were here still add up inside the window.
3. Travel days count in full. The day you land and the day you fly out each count as a day in Colombia. Frequent short trips add up fast.

“More than 183” means the 184th day is the one that crosses the line. We would not plan around sitting at exactly 183. One miscounted travel day erases the margin, and the burden of reconstructing your movements later falls on you.

When the window straddles two tax years

Colombia’s income tax year is the calendar year. The 365-day window is not tied to it. That mismatch is why the last sentence of the presence test matters: when the qualifying stay spans more than one tax year, residency starts from the second year.

A hypothetical shows the mechanics. The dates are illustrative and assume one continuous stay in a non-leap year; they are not drawn from anyone’s case.

Change one fact. Someone arrives on 15 January and stays through the summer. Their 184th day lands in mid-July of the same calendar year. The stay never straddles a year-end, so they are resident for that year.

Two practical consequences follow. First, a long stay that starts in the autumn usually points to residency for the following year, with that year’s return due in the year after. Second, the year-end decision — leave in December, or stay through the first quarter — is often the one that moves the result.

Real stays are rarely this tidy: people leave and come back, and windows overlap. Where the pattern is irregular, the counting should be done with a contador (a Colombian licensed public accountant) rather than by rule of thumb.

What tax residency sets in motion

Residency changes the scope of what Colombia taxes. DIAN’s guidance on Article 9 of the Estatuto Tributario is direct about it: residents are taxed on income and occasional gains from both Colombian and foreign sources, and on assets held inside and outside the country. Non-residents are taxed only on Colombian-source income and on assets held in Colombia (DIAN, checked October 2026).

In practice, once you are resident, income you earn abroad — remote salary, investment income, rent from a property back home — comes into Colombia’s scope, subject to whatever exemptions and credits apply, and whether or not you ever move that money into a Colombian account. We don’t quote rates or brackets here; take those from a contador working from the current rules.

At a high level, the filing side works like this:

• Whether you must file depends on thresholds — gross equity, gross income, and certain spending and deposit totals — expressed in UVT (Unidad de Valor Tributario, the indexed unit Colombia uses for tax figures). They are restated every cycle. Check the current ones rather than last year’s.
• When you file. The return (declaración de renta) for a calendar year is filed in the second half of the following year. For the 2025 tax year, DIAN set deadlines from 12 August to 26 October 2026, assigned by the last two digits of the taxpayer’s NIT (tax identification number), as reported by INCP from DIAN’s June 2026 announcement (checked October 2026). The next cycle’s dates will be published separately.
• Which form. DIAN’s residency guidance directs non-resident individuals who must file to Form 110. Residents file on the individual return. Your contador will confirm which applies to you.
• Registration. Filing requires being registered in the RUT, Colombia’s tax registry. Someone who becomes resident without ever registering has a step to take before the deadline.

Tax residency is not your visa

A visa, and the cédula de extranjería (the ID card issued to foreign residents) that comes with some categories, tell you where you may live. Tax residency decides which government taxes your worldwide income. Different rules set them, and different facts trigger them.

• A person on a temporary visa can cross the presence test without ever holding a resident visa.
• A resident-visa holder who spends most of the year abroad may never cross it.
• An investor visa does not by itself make you a tax resident, and not having one does not protect you if your days add up.

The order matters. Work out what tax residency would cost you first, then look at which visa fits.

Why Americans still file at home

The United States taxes its citizens and resident aliens on worldwide income from all sources, and its filing rules are generally the same whether you live in the US or abroad (IRS, checked October 2026). Becoming a Colombian tax resident does not end the US return. It adds a second one.

• There is no US–Colombia income tax treaty on the IRS list. Colombia does not appear on the IRS’s A-to-Z list of US income tax treaties (checked October 2026). Without a treaty, there is no treaty tie-breaker for dual residents; any relief from double taxation has to come from each country’s own domestic rules, which is a question for a cross-border tax professional.
• Living abroad moves the deadline, not the obligation. US taxpayers living outside the country on the regular due date get an automatic extension to June 15 for filing, but interest still runs on tax not paid by April 15 (IRS).
• Accounts carry their own reporting. Colombian bank and brokerage accounts can also trigger separate US information reports — the FBAR filed with FinCEN and IRS Form 8938 — each with its own thresholds (IRS).

Count the days before you count anything else. Then confirm the result with a licensed Colombian contador or tax lawyer — and, if you are American, a US CPA — before you file either return.