Mexico Treasury Plans 2027 Tax Collection Push

That matters because Mexico is trying to consolidate its public finances without resorting to an abrupt squeeze on spending. The 2027 budget package envisions a public deficit of 3.9% of GDP, down from 4.1% expected for 2026, while preserving funding for investment and social programs that remain central to President Claudia Sheinbaum’s agenda.

The revenue plan leans heavily on tighter enforcement rather than a broad-based increase in headline tax rates. Hacienda said it will modernize the fiscal system and expand the capabilities of the tax authority, SAT, using digital tools to improve compliance and collections. It also wants to close off avenues for aggressive tax planning through changes to deductions and fiscal losses, while cracking down on simulated invoicing, evasion and avoidance.

For businesses, that combination raises the probability of more scrutiny on corporate tax structures and a narrower set of planning opportunities. Smaller firms may get some relief: the government plans to widen the thresholds for its simplified confidence regime for legal entities and offer a simpler VAT payment option, a sign that the enforcement push is aimed more at larger taxpayers and informal practices than at micro-enterprises.

For investors, the key issue is whether Mexico can lift revenues enough to stabilize debt dynamics while maintaining growth-supportive spending. Amador Zamora said 85% of debt will remain denominated in local currency and 80% of government securities will be fixed-rate and long-dated, reducing refinancing and exchange-rate risk. That structure is generally supportive for sovereign credit, but it does not eliminate the risk that weaker growth or a softer tax yield could force the government into tougher financing choices later.

The market implication is straightforward: if the revenue measures work, Mexico can keep deficits contained with less pressure on issuance and funding costs. If they fall short, the government may have to choose between deeper spending restraint, higher borrowing or more aggressive tax measures, any of which could test confidence in fiscal policy.

Senator Miguel Ángel Yunes Márquez signaled the legislative debate ahead will center on growth, revenue, debt and the cost of financing, while also weighing the effects on jobs, investment and public services. That is the core trade-off for 2027: bolster the state’s collection power enough to shore up the budget, but not so much that it slows the economy the Treasury needs to fund.