The day rule: rolling, not calendar-year
You're a Colombian tax resident if you're in the country more than 183 days — continuously or not — during any period of 365 consecutive days. That rolling window is the key: unlike Spain's calendar-year test, days from November one year and February the next can combine to cross the line. Your entry and exit days both count.
The cross-year twist
If your qualifying 183-plus stretch falls across two tax years, you don't become resident retroactively — you're resident from the second year. That timing rule matters for planning a move, because it can shift which year your foreign income first becomes taxable in Colombia.
Colombian nationals: four more ways in
If you're a Colombian national, the day count isn't the only route. You're also a resident if, in the year, any of these hold: your spouse/partner or dependent minor children are Colombian tax residents; 50% or more of your income is Colombian-source; 50% or more of your assets are managed in Colombia; 50% or more of your assets are located in Colombia; you were asked by the DIAN and can't prove foreign residence; or you have residence in a tax haven. So a Colombian who spends most of the year abroad can still be caught by where their money and family are.
The domicile carve-out that saves many expats
There's a crucial exception (added by Ley 1739 of 2014). A Colombian national who trips those criteria is not treated as resident if either: 50% or more of their annual income is sourced in the country where they're domiciled, or 50% or more of their assets are located there. In practice, a Colombian who has genuinely built their economic life in their new country usually clears this — but you may need a residence certificate from that country if the DIAN asks.
Foreigners: it's just the days
If you're not a Colombian national, the national criteria don't apply to you at all. You become a Colombian tax resident purely by the 184-days-in-365 test. Simpler — but the rolling window still catches people who assumed the clock resets each January.
Why it matters
Colombian tax residents declare and pay tax on their worldwide income and wealth; non-residents only on Colombian-source income. Crossing into residency can pull your foreign salary, investments and assets into the Colombian net — which is exactly why the day-count and national rules are worth getting right before year-end.
Check your Colombian residency → Free checker: answer a few questions — nationality, days, and (for Colombians) income/assets/family — and see your likely status for 2026.