Foreign Tax Credit Limits for U.S. Citizens in Colombia

Why the FTC is the only relief tool

There is no income tax treaty between the United States and the Republic of Colombia. None has ever entered into force, and as of 2026 none is in active negotiation. That single fact governs almost every cross-border tax problem a U.S. citizen faces after becoming a Colombian tax resident — because in a treaty country, the treaty itself does much of the work of dividing taxing rights, reducing withholding, and re-sourcing income to absorb credits. In Colombia, none of that machinery exists. The only remaining mechanism to mitigate double taxation under U.S. law is the Foreign Tax Credit (FTC) under IRC §§901–909, claimed on Form 1116.

The FTC is a powerful relief mechanism, but it is incomplete by design. Congress drafted it as a unilateral concession by the United States to credit foreign income taxes against U.S. tax on the same income, and it surrounded that concession with limitations meant to prevent the credit from offsetting U.S. tax on U.S.-source income. In a treaty country those limitations are softened by re-sourcing rules; in Colombia they are not. The result is that significant pools of Colombian tax never produce a usable U.S. credit, and U.S.-source income taxed by Colombia produces double taxation that no provision of the Internal Revenue Code is willing to fix.

This article walks through the four structural mechanisms that strand FTC credits for a U.S. citizen living in Colombia: the four-basket separation of §904(d), the limitation fraction of §904(a), the unavailability of treaty re-sourcing under §§865(h), 904(d)(6) and 904(h)(10), and the creditability tests of Treas. Reg. §1.901-2 applied to specific Colombian taxes. It then shows how the planning calculus changes once you accept that the FTC will not eliminate every dollar of double taxation.

The four FTC baskets — §904(d)

The FTC is computed separately for each of four categories of foreign-source income, called baskets. IRC §904(d) requires the taxpayer to allocate every dollar of foreign-source income, and every dollar of foreign income tax, to one of:

• Passive category — dividends, interest, rents, royalties, annuities, capital gains and most other portfolio income.
• General category — wages, business income, self-employment income, and most other active income that does not fall in another basket.
• GILTI / NCTI category (§951A) — Controlled Foreign Corporation tested-income inclusions of a U.S. shareholder. Foreign taxes assigned to this basket are credited at only 80% for tax years beginning in 2025 and at 90% for tax years beginning in 2026 under the OBBBA-renamed Net CFC Tested Income (NCTI) regime — and these credits cannot be carried back or carried forward at all.
• Foreign branch category — income of a Qualified Business Unit (QBU) of a U.S. person that carries on a trade or business outside the United States.

Each basket runs its own §904(a) limitation, and credits stranded in one basket cannot reach U.S. tax in another. The result, for an ordinary U.S. citizen in Colombia, is that the basket boundaries chop up what feels like a single tax life into several non-fungible pools.

Consider a simple example. A U.S. citizen is a Colombian tax resident earning COP 800m in wages from a Colombian employer (general basket) and USD 25,000 in dividends from a U.S. brokerage account. The U.S. dividends are U.S.-source on the U.S. return, and they sit in the passive basket on Form 1116. But Colombia taxes worldwide income, so it taxes those U.S. dividends as part of the cédula general or as rentas de capital. The Colombian tax on the U.S. dividends is a foreign tax — it goes in the passive basket of Form 1116 — but the only U.S. tax in that basket is U.S. tax on foreign-source dividends, and there aren't any. The §904(a) numerator is zero, the FTC is zero, and the Colombian tax on those U.S. dividends produces no U.S. credit. Double taxation results.

The §904(a) limitation

For each basket, the credit is capped by the fraction:

FTC limit = (foreign-source taxable income in basket ÷ total taxable income) × U.S. tentative tax

This is the §904(a) limitation. It says that the FTC can never exceed the share of U.S. tax that is, in effect, attributable to foreign-source income. The Colombian top marginal rate on ordinary income is 39% for taxable income above 31,000 UVT (approximately COP 1.62 billion at the 2026 UVT value of COP 52,374). The U.S. top individual rate on ordinary income is 37%. Layer on the Colombian solidarity contributions, departmental ICA, and the wealth tax, and the effective Colombian rate at the top of the income distribution comfortably exceeds the effective U.S. rate.

The arithmetic consequence is that high-bracket Colombian residents almost always generate excess credits in the general basket. The Colombian tax paid on a peso of wage income is larger than the U.S. tax that same peso would have generated, so the limitation fraction bites and the excess sits as a carryover under §904(c). Whether that carryover is ever used depends on whether the taxpayer later generates offsetting foreign-source general-basket income — which most expatriates do not, because once they leave Colombia they stop earning Colombian wages.

No treaty re-sourcing — the costliest gap

The single most expensive consequence of the missing treaty is the unavailability of treaty re-sourcing. Under IRC §§865(h), 904(d)(6) and 904(h)(10), a U.S. citizen resident in a treaty country can elect to treat certain U.S.-source income as foreign-source for FTC purposes when the treaty permits the residence country to tax that income. The re-sourced income lands in a separate Form 1116 basket — labeled "Certain income re-sourced by treaty" — and the foreign tax paid on it can be credited against the U.S. tax on it. The election effectively closes the double-tax loop on U.S.-source dividends, pensions, Social Security, capital gains and rental income for U.S. citizens living in a treaty jurisdiction.

For U.S. citizens in Colombia, none of this is available. Because there is no U.S.–Colombia income tax treaty, there is nothing to elect. U.S.-source income that Colombia taxes under its worldwide-income rule produces a Colombian tax that goes into the passive basket on Form 1116 alongside any other passive foreign-source income — typically very little — and almost all of that Colombian tax is wasted against the §904(a) cap of zero.

Put differently: if you are a U.S. citizen Colombian resident with a meaningful pool of U.S.-source investment income, the absence of the treaty is not an abstraction. It is a recurring annual leakage of 19% to 39% Colombian tax that the United States refuses to credit. Over a ten-year retirement, the cumulative cost can easily exceed six figures.

Creditability of specific Colombian taxes under §901

Even within the foreign taxes that are creditable, not every tax labeled "tax" by Colombia qualifies. Treas. Reg. §1.901-2 requires a foreign levy to satisfy the realization, gross-receipts, and net-income tests before it counts as an income tax for credit purposes. The table below summarizes how the principal Colombian levies fare.

Carryback and carryforward — §904(c)

Unused FTCs do not vanish immediately. Under IRC §904(c), an unused credit in a given basket carries back one year and then forward ten years, applied separately within that basket. The carryback runs first; the forward carry runs in order of accrual. The GILTI / NCTI basket is the exception — credits there cannot carry at all and are lost in the year of accrual to the extent not absorbed.

For Colombian residents, the carryforward is theoretically generous and practically frustrating. A U.S. citizen earning Colombian wages routinely generates several thousand dollars of excess general-basket FTC every year, because Colombia's effective rate exceeds the U.S. rate on the same wage. Those carryovers can be used only against future U.S. tax on future foreign-source general-basket income — typically more Colombian wages. The day the taxpayer moves back to the United States, that wage stream disappears, and the carryforward begins counting down to expiration with nothing to absorb it.

Two responses exist. The first is to generate offsetting foreign-source general-basket income while still abroad — for example, by allocating Colombian-source self-employment income or by deferring a Colombian bonus into a future year when U.S.-source income is lighter. The second is to accept that the carryforward will expire and to model the credit as having a useful life shorter than ten years. Most taxpayers in this position do the second, often unknowingly.

High-tax kickout, §911 stacking, deduction allocation

Three further mechanics tighten the FTC for high earners in Colombia.

High-tax kickout. Under §904(d)(2)(F), passive income that is taxed by the source country at an effective rate higher than the highest U.S. rate on ordinary income is "kicked out" of the passive basket and into the general basket. Colombia's progressive rates can trigger this for high-earner portfolio income — particularly Colombian-source rental income or Colombian capital gains assessed at the top marginal rate. The kicked-out income moves to the general basket where it often has more company and where the §904(a) limitation may be more forgiving.

§911 stacking. A taxpayer who elects the Foreign Earned Income Exclusion under IRC §911 must reduce both the FTC numerator and the FTC denominator on Form 1116 to exclude the already-excluded income. The line on Form 1116 captioned "Deductions allocated and apportioned to excluded income" implements this reduction. The practical effect is that the FTC on the Colombian tax allocable to the FEIE-excluded slice of wages is permanently disallowed. Above the §911 ceiling — USD 130,000 for tax year 2025 — the FEIE adds nothing and the FTC alone is more efficient. This is why the FEIE-vs-FTC choice in Colombia almost always defaults to the FTC for incomes above the ceiling.

Deduction allocation. Interest expense, charitable contributions, and other deductions must be apportioned between U.S.-source and foreign-source income under IRC §§861–865 and the corresponding regulations. Apportioned deductions reduce the foreign-source taxable income in the §904(a) numerator, which tightens the credit cap even though no actual tax has changed. Many self-prepared Form 1116 filings overstate the FTC because they fail to apportion U.S. itemized deductions to foreign-source income.

The Colombian-side credit — ET Art. 254

Colombia does grant a unilateral relief credit of its own. Article 254 of the Estatuto Tributario permits a Colombian tax resident to credit foreign income tax paid against the Colombian tax on the same foreign-source income, capped at the Colombian tax that would have applied to that income at Colombian rates.

For a U.S. citizen, this matters in the symmetric direction. Suppose a Colombian resident receives USD 50,000 in U.S.-source qualified dividends taxed at the 15% long-term capital gains rate in the United States — USD 7,500 of U.S. tax. Colombia taxes those dividends as part of worldwide income at, say, an effective 33%, for a Colombian liability of USD 16,500. Article 254 lets the taxpayer credit the U.S. USD 7,500 against the Colombian USD 16,500, leaving a net Colombian payment of USD 9,000. The credit is bounded by the Colombian liability on the same income; if Colombia's effective rate on the dividends had been only 10% — rare for high earners — the credit would have dropped to the Colombian amount and the excess U.S. tax would have been wasted.

Article 254 is unilateral, and it works only because Colombia chose to grant it. It does not solve the U.S. side of the same transaction, which remains stuck in the wrong Form 1116 basket as described above.

Cross-credit timing problems

U.S. and Colombian tax years align on the calendar, but the payment of tax can lag substantially. A U.S. citizen pays U.S. tax on 2025 capital gains through estimated payments and an April 2026 Form 1040, but the corresponding Colombian liability on the same gain is not assessed until the declaración de renta for fiscal year 2025 is filed in August–October 2026. Under IRC §905, the FTC is generally claimed in the year the foreign tax accrues for an accrual-basis taxpayer or is paid for a cash-basis taxpayer.

If the Colombian tax later changes — through a corrected assessment, refund, or audit adjustment — IRC §905(c) requires the U.S. taxpayer to redetermine the FTC and file an amended return. Mismatched timing can leave a U.S. credit claimed against a Colombian liability that has not yet been paid, and §905(c) demands restitution if the liability later changes. The mechanics are workable but require careful tracking; a Colombian tax practitioner and a U.S. tax preparer working in coordination are functionally required.

Worked scenario — Sandra in Bogotá

Sandra, a U.S. citizen, has lived in Bogotá since 2024 and earns USD 300,000 annual salary from a U.S. employer that pays her remotely. She is a Colombian tax resident and files in both jurisdictions.

On the U.S. side, her USD 300,000 W-2 wages flow to Form 1040 with a §911 FEIE election that excludes USD 130,000. The remaining USD 170,000 is taxable in the United States; U.S. tax on the residual, after standard deduction and applicable credits, is approximately USD 35,000. She files Form 1116, general category, to credit Colombian tax against this residual U.S. liability. (Above the §911 ceiling, she would have been better off skipping the FEIE altogether and using the FTC alone — the FEIE adds little once the ceiling binds.)

On the Colombian side, the entire USD 300,000 is taxed under rentas de trabajo in the cédula general, with the top marginal rate of 39% reached well within the salary. After the 25% labor exemption (capped at 790 UVT) and other deductions, Colombian tax accrues at roughly USD 90,000–100,000.

The FTC computation puts a portion of the Colombian tax — the portion allocable to the FEIE-excluded slice — permanently outside the credit. The remainder credits fully against her residual U.S. tax of USD 35,000, wiping it out entirely, with USD 15,000–25,000 of excess Colombian credit carrying forward.

Three years later, Sandra returns to the United States, takes a U.S. job, and stops earning Colombian-source income entirely. Her general-basket FTC carryforward sits on Schedule B of Form 1116 with no foreign-source general-basket income to absorb it. Year by year, the oldest layer of the carryforward expires under the 10-year rule of §904(c) until the pool is gone. The cash she paid Colombia is never recovered through the U.S. system. This outcome is unremarkable; it is the default for an expatriate who returns home.

Planning checklist

• Allocate by basket. Maintain a running schedule of Colombian tax paid, segmented by Form 1116 basket. Wage withholding goes to general; dividend, interest, rental, and capital-gain tax goes to passive (subject to high-tax kickout).
• Track basis differences. Items like 401(k) deferrals are excluded from current U.S. income but taxed in full by Colombia. The Colombian tax paid now will never produce a U.S. credit when the 401(k) is later distributed — plan for the leak.
• Confirm ganancia ocasional creditability before relying. The 15% ganancia ocasional on a sale of stock is generally creditable; the same tax on an inheritance is not. Substance, not name, determines §901 treatment.
• Expect to lose the wealth tax. Treat impuesto al patrimonio as a non-creditable cost. If you have meaningful net worth in Colombia, model the wealth tax as a permanent expense, not a creditable foreign tax.
• Watch the carryforward clock. Excess general-basket FTC has a finite useful life. If the carryforward exceeds your projected future foreign-source income, accept the leakage and stop optimizing around a credit you cannot use.
• Coordinate with a Colombian asesor tributario. Article 254 on the Colombian side and §905(c) on the U.S. side mean that audit adjustments in either country flow through to the other. The two filings must be reconciled annually.

The Foreign Tax Credit is doing real work for U.S. citizens in Colombia — without it, the double-tax exposure would be catastrophic. But it is not a substitute for a treaty, and pretending otherwise leads to under-reserved positions and unpleasant surprises at filing time. The first task of any Colombian-resident U.S. citizen is to understand exactly which slices of foreign tax the FTC will credit, which it will not, and to plan around the gap rather than against it.

References: IRC §§901, 904, 905, 909, 911, 951A; Treas. Reg. §§1.901-2, 1.904-1, 1.904-4; IRS Publication 514 (Foreign Tax Credit for Individuals); Form 1116 Instructions (2025); Colombian Estatuto Tributario Art. 254.