Overview
Costa Rica, like Panama, runs a territorial tax system — it taxes only Costa Rican-source income. This makes it one of the structurally simplest countries on this list, with the same underlying logic as Panama but a few important differences in the details.
Roth IRA Treatment — Settled
Roth IRA distributions are foreign-source income and are not taxed by Costa Rica, regardless of amount. Consistent across every source reviewed.
Traditional IRA / 401(k) / Pension Treatment — Settled
Same answer: US Social Security, pensions, 401(k), and Traditional IRA distributions are all foreign-source and untaxed by Costa Rica.
Social Security Treatment — Settled
Not taxed by Costa Rica. On the US side, up to 85% of Social Security benefits remain includable in US taxable income regardless of Costa Rican residence — Costa Rica's territorial system doesn't change how the US taxes the benefit.
The Important Catch: No US-Costa Rica Tax Treaty
As with Panama, there is no US-Costa Rica income tax treaty and no Social Security totalization agreement. In practice this rarely creates double taxation for retirees, since Costa Rica isn't taxing this income to begin with — but it does mean there's no treaty-based dispute resolution mechanism if one is ever needed.
The Documentation Requirement
Unlike a pure "nothing to think about" system, Costa Rica's territorial exemption requires you to be able to document that income is genuinely foreign-source — contracts, payment records, proof of a foreign payer. For straightforward retirement income (a 1099-R from a US custodian, an SSA benefit statement), this is usually trivial. It becomes more relevant for retirees with mixed income streams or any Costa Rica-based work or business activity, where the line between foreign-source and Costa Rican-source income needs to be actively maintained.
Wealth Tax Exposure — Settled
Costa Rica has no wealth tax and no inheritance tax.
Key Planning Consideration
As with Panama, there's no local-rate-minimization question to solve — Costa Rica isn't taxing any of this income. The more relevant planning question for many retirees is Roth conversion timing purely for US tax reasons (the low-income gap years before Social Security and RMDs begin — see the National Tax Strategies guide), since Costa Rican residence doesn't change that calculus one way or the other.
Recommended Advisor Type
A US-side CPA or enrolled agent experienced with expat filings; Costa Rica-side tax complexity is minimal for retirees living purely on foreign-source income, though anyone with local employment, a local business, or Costa Rican-source interest income (locally taxed, currently around 5.5% withholding, scheduled to rise over time) should verify their specific documentation needs.
Sources
- CountryTaxCalc — Moving to Costa Rica Tax Guide 2026
- Taxes for Expats — US taxes in Costa Rica: Complete expat guide (2026)
- Greenback Tax Services — U.S. Taxes in Costa Rica: Expat Rates, Forms, and Deadlines
- Bullseye Retirement Planning — Retiring in Costa Rica: Tax Strategy
This is general education, not personalized advice. Confirm documentation requirements for your specific income mix with a Costa Rica-experienced tax professional.