Quick answer: If the last two digits of your cédula are between 01 and 26, your income tax filing deadline has already passed or is passing this very week of August. If you didn’t file on time, the late-filing penalty is 5% of the tax owed for each month or fraction of a month of delay (or 0.5% of your gross income if you owe no tax), with a minimum penalty of COP $523,740. Every day that passes without filing counts as a full month for calculation purposes — so the immediate action is to file now, not wait for “next month.”
Table of Contents
- Where We Stand on the Calendar in Late August
- How the Late-Filing Penalty Is Calculated
- A Real Calculation Example
- Why “One Month Late” Can Be Just a Few Days
- What Happens If the DIAN Summons You First
- What to Do Right Now If Your Deadline Has Passed
- If Your Deadline Hasn’t Arrived Yet
- Frequently Asked Questions
Where We Stand on the Calendar in Late August
Colombia’s 2026 income tax filing season opened on August 12. By the time you’re reading this article, the deadlines for cédula digit groups 01 through 26 have already passed or are passing this very week — meaning more than half of taxpayers required to file have already crossed their individual deadline, or are about to. The remaining groups (27 onward) have their dates in September and October.
This is, literally, the “home stretch” point for the first half of the season’s taxpayers. If your deadline already passed and you haven’t filed, this isn’t a theoretical warning — it’s a situation that’s already costing you money, month by month, for as long as you keep not filing.
Colombia Late Tax Filing Penalty 2026: How It’s Calculated
The penalty for filing your income tax return after your deadline is calculated three different ways, depending on your situation:
- If your return has tax owed: the penalty is 5% of the tax owed, for each month or fraction of a month of delay.
- If your return generates no tax owed: the penalty is 0.5% of your gross income for the tax year, for each month or fraction of a month of delay.
- If you had no income during the tax year: the penalty is 1% of your net worth, for each month or fraction of a month of delay.
In any of the three cases, there’s a minimum penalty of 10 UVT, equivalent to COP $523,740 in 2026 — so even if the percentage calculation comes out lower, you pay at least that amount.
A Real Calculation Example
Suppose your deadline was August 12, you have COP $3,000,000 in tax owed, and you end up filing on September 20 — a month and a few days late, which counts as 2 months or a fraction for calculation purposes (see the next section for why).
- Penalty: 5% × $3,000,000 × 2 = COP $300,000
- Compared with the minimum penalty of COP $523,740, in this case the minimum penalty applies, because it’s higher than the percentage calculation.
If instead your tax owed were COP $15,000,000 with the same 2-month delay:
- Penalty: 5% × $15,000,000 × 2 = COP $1,500,000 — here the percentage calculation exceeds the minimum penalty, so you pay the calculated amount.
The key point: the higher your tax owed, the faster the penalty grows with every month that passes without filing. Waiting doesn’t reduce the problem — it multiplies it month by month.
Why “One Month Late” Can Be Just a Few Days
Here’s the detail that surprises the most taxpayers: the penalty is calculated by month or fraction of a month, which means filing a single day after your deadline already counts as a full month of delay for calculation purposes. There’s no proportional discount for “just a few days late” — a 3-day delay and a 29-day delay generate exactly the same first-month penalty.
This has an important practical implication: if you already know you’re not going to make your exact deadline, there’s no advantage in waiting a few extra days “to get everything perfect” — the cost of the first month of delay was already incurred from day one. What waiting does avoid is accumulating a second full month of penalty by continuing to wait.
What Happens If the DIAN Summons You First
There’s an important difference between filing late on your own initiative and filing late after the DIAN has formally summoned you (known as an emplazamiento). If the DIAN summons you first and you file your return after that request, the penalty increases — it goes from 5% monthly to 10% monthly on the same bases.
This means the window between “I already missed my deadline” and “the DIAN summoned me” is exactly the moment when acting on your own saves you half the penalty you’d pay if you wait to be contacted first.
What to Do Right Now If Your Deadline Has Passed
- File immediately, don’t wait for next month — every additional month of waiting is an additional month of penalty calculated on your tax owed, your gross income, or your net worth, depending on your case.
- Gather your exogenous information (información exógena) before filing, to make sure your return matches what third parties already reported to the DIAN — filing late with errors is worse than filing late correctly.
- Calculate your penalty in advance using the formulas in this article, so you’re not surprised when it’s time to pay.
- If you have a credit balance from previous years, check whether a compensation mechanism applies before assuming you must pay the penalty in cash immediately — check this with your accountant.
- Don’t wait for the DIAN to contact you — the difference between filing on your own initiative and filing after a summons is literally double the penalty.
If Your Deadline Hasn’t Arrived Yet
If the last two digits of your cédula are between 27 and 00, your deadline is still in September or October — but this article’s message applies equally: the closer you wait to your deadline to start preparing your return, the higher the risk of being late because of something unexpected (a missing document, an accountant’s appointment you can’t get in time, an error you discover on the last day). Check our complete guide to the official 2026 DIAN calendar to confirm your exact date and start preparing with margin.
When to Seek Professional Advice
If your deadline has already passed and you haven’t filed, or if you have questions about how your specific penalty is calculated, it’s worth consulting an accountant right away — the faster you act, the smaller the accumulated penalty. It’s also time to seek advice if you suspect the DIAN might summon you soon, because once the summons happens, the penalty doubles.
At Nexo Legal, we help individuals and companies catch up on late returns, correctly calculate their penalty, and prevent an initial delay from becoming a bigger problem by continuing to wait. If your deadline has already passed, contact us today — not next month.
Frequently Asked Questions
What’s the penalty for filing my Colombian income tax return after the deadline in 2026?
5% of the tax owed for each month or fraction of a month of delay, or 0.5% of gross income if there’s no tax owed, or 1% of net worth if there was no income during the year. The minimum penalty is COP $523,740 (10 UVT).
Does a single day of delay count as a full month for the penalty?
Yes. The penalty is calculated by month or fraction of a month, so filing one day after your deadline already generates the penalty corresponding to a full month.
What happens if the DIAN summons me before I file late on my own?
The penalty doubles: it goes from 5% monthly to 10% monthly on the same calculation base. Filing on your own initiative, before any summons, always results in a lower penalty.
How do I know if my deadline has already passed?
It depends on the last two digits of your cédula or NIT. Groups 01 to 26 had their deadline between August 12 and 31, 2026; the following groups are due in September and October.
What should I do if my deadline has already passed and I haven’t filed?
File immediately, gather your exogenous information so your return is consistent, calculate your penalty in advance, and don’t wait for the DIAN to contact you, because that would double the penalty percentage.
Published: August 2026 — Nexo Legal
Sources: Estatuto Tributario Colombiano, Art. 641-642 (verified against primary legal text, estatuto.co) | DIAN — 2026 Tax Calendar