Case Study
Zero idle reserve, millions freed: how TechFX eliminated its 5% FX reserve and automated payouts for 2,000+ contractors.

The challenge
TechFX is a Brazilian platform focused on helping technology professionals and companies receive international payments with more transparency, speed and flexibility. Its product supports global workers and service providers who earn in foreign currency and need an efficient way to receive, convert and settle funds in Brazil.
For this customer segment, FX is not an occasional transaction. It is part of income, payroll and day-to-day financial planning.
Brazilian technology professionals working for international companies face high costs, bureaucracy and currency volatility when receiving payments from abroad.
For TechFX, that volatility also created an operational challenge. The company’s previous model required holding an idle buffer of approximately 5% to manage FX fluctuation risk. As payment volume grew, the buffer grew with it.
That capital was not being used productively. It was reserved to absorb currency movement, reducing capital efficiency for the platform and its customers. What started as a risk-management mechanism became a scaling constraint.
TechFX needed a settlement model that could reduce FX exposure, automate payment flows and free working capital without adding operational complexity.
How Lumx solved it
TechFX integrated with Lumx via API to automate the payment flow from employer payment initiation to contractor payout in BRL.
The integration turned a process that previously depended on manual handling and a protective capital buffer into a more automated settlement pipeline. Multi-currency virtual accounts in USD enabled dedicated account infrastructure for receiving international payments, reducing intermediary friction at the collection stage.
With settlement automated and the currency leg handled through modern rails, the structural need for an idle FX buffer was reduced.
Results
TechFX eliminated the 5% idle buffer from its previous model, freeing significant working capital annually.
Capital that had previously been reserved against FX volatility became available to the business and its customers, improving efficiency as the platform scaled.
Key takeaways
When FX risk is managed through idle capital, growth makes the problem larger. Every new customer and every additional payment increases the amount of capital that needs to sit unused.
By automating settlement with Lumx and moving the currency leg onto modern rails, TechFX reduced the need for a protective buffer and improved the capital efficiency of its operation.
This is a repeatable pattern for payroll, payouts and international receivables platforms whose growth is constrained by capital held against currency volatility.
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