A Stronger Colón Is a Currency-Mismatch Test for Costa Rica Deals

October 17, 2026

Costa Rica’s dollar rate has swung inside a narrow band this autumn: a 2026 low of 446.80 colones on 17 September, a bounce to 460.45 on 1 October, and a close of 452.92 on 9 October. For a foreign investor, that 3% range is small, but it is large enough to move the returns of any deal whose revenue and costs are in different currencies. We use the move as the hook for a transferable lesson: how to test currency mismatch before you commit capital.

Key takeaways

The colón has traded between roughly 447 and 460 per dollar over the past month, and the central bank says it does not target a level.
Dollar-earning assets with colón costs lose margin when the colón firms, so the mismatch is a cost-side risk as much as a revenue-side one.
A sound underwriting file shows returns at several exchange rates, not one base case.

What Happened

On the central bank’s wholesale market (Monex), the dollar closed at 452.92 colones on Friday 9 October, down 5.70 from 458.62 a week earlier.
The 2026 low was 446.80 on 17 September; the close reached 460.45 on 1 October, its highest in months, before the downtrend resumed.
The central bank bought US$135.55 million for the non-bank public sector that week and ran a US$71.32 million stabilization operation, its first since 16 September.
Intermediaries bought US$439.18 million from the public and sold US$356.36 million from Monday to Wednesday, a net surplus of US$82.82 million of dollars.
Year-on-year inflation turned positive in September (0.34% per INEC, as reported by the Tico Times) after 16 straight months of declines, still below the 3% target.
The board kept the policy rate at 3.00% on 24 September and said it will adjust if conditions require.

Chart: Colones per US dollar, Monex closes, 17 Sep – 9 Oct 2026

Date (2026)	Colones per US$	Vs. 1 Oct peak
17 Sep (year low)	446.80	-13.65
29 Sep	457.46	-2.99
1 Oct (peak)	460.45	0.00
9 Oct (close)	452.92	-7.53

Source: BCCR Monex data as reported by La Nacion (30 Sep, 10 Oct 2026) and the Tico Times (12 Oct 2026).

Why It Matters for Costa Rica

Many Costa Rican assets earn in dollars and spend in colones. Hotels, short-term rentals, free-zone service firms and exporters price in dollars, yet pay wages, utilities, local taxes and contractors in colones. When the dollar buys fewer colones, the colón cost of running the asset rises in dollar terms, and operating margin shrinks even though nothing changed on the ground. An unnamed coffee producer quoted by the Tico Times described the low rate as more damaging than the pandemic, which is anecdotal but points to where the pain lands.

The reverse case matters too. A fund holding colón-denominated income, such as local-currency rents or receivables, reports more dollars when the colón firms. That gain is real on paper, but it is a currency bet the sponsor did not necessarily underwrite. The point is not to guess direction. It is to know which side of the mismatch a given deal sits on, and how much of the return depends on it.

The central bank’s own stance supports caution about any single base case. Its president has said that while dollars remain in surplus, pressure points toward a stable or slightly lower rate, and that the bank sets neither a level nor a path. Six institutions surveyed by La Nacion in late September gave year-end ranges that run from 440 to 465, which is wide enough that a deal needing a narrow band is carrying hidden risk.

Where the Story Is Weaker

A three percent range over three weeks is not a regime change. The colón has moved in both directions, and the early-October bounce reversed within days. Positive inflation of 0.34% is a small number, and the same month’s reading was lifted by items such as eggs, so we would not read it as the start of a sustained shift. The central bank has also cited external risks, including energy prices and weather effects on food, that can move prices and flows in unexpected ways. Finally, we have not seen reserve totals in the sources we used, so we cannot say how much room the bank has to lean against a larger move.

Investor Read-Through

Split every line of the operating budget into dollar and colón buckets before looking at returns; the colón bucket is your exposure.
Ask for returns at three exchange rates, for example the recent low, a midpoint and the recent high, instead of one spot rate.
Check which loans, leases and contracts are in dollars, since fixed colón costs can be a partial natural hedge for colón revenue and vice versa.
Our read, not a forecast: a range-bound colón is a reason to size the buffer, not to bet on direction.

Run Your Own Numbers

Take the asset’s annual budget, sort each line into dollars or colones, then convert the colón lines at the low, middle and high exchange rates you choose. Compare the resulting net operating income at each rate.

Input	Your assumption	Effect on net income
Annual colón-denominated costs
Annual dollar-denominated revenue
Exchange rate: low / mid / high
Share of costs in dollars (loans, insurance)

Illustration only, not a forecast. Hypothetical: an asset has ₡450,000,000 of annual colón costs. At 446.80 colones per dollar, that is about US$1,007,162; at 460.45, about US$977,305. A firmer colón therefore adds roughly US$29,857 to the dollar cost of the same colón budget. Rates are the 17 September low and 1 October peak cited above; the cost figure is invented.

Questions to take to a sponsor, advisor or counterparty

What exchange rate does the base case use, and what happens to the return at the other end of the recent range?
Which costs are fixed in colones, and are any contracts indexed to the dollar?
Is there a hedging policy, and who bears the cost if it is not used?

Data as of 17 October 2026. Figures marked preliminary will be revised. This is general market commentary, not investment advice.