Mexico Tax Update: Nearshoring, Audits, and Treaty Twists

Mexico’s corporate tax landscape remains anchored at a 30% federal rate, one of the highest but remarkably stable in the region. Withholding taxes on dividends, royalties, interest and other payments to foreign residents range from 0.9% to 15%, but double‑tax treaties can dramatically reduce these burdens—provided taxpayers satisfy the MLI’s principal purpose test introduced in 2024. A unique challenge for debt‑funded subsidiaries is the three‑fold adjustment for interest, inflation, and foreign‑exchange effects, which together determine the net deductible expense. Additionally, Mexico’s CFC rules (REFIPRE) target passive income taxed abroad at less than 75% of the domestic rate, while a 16% VAT—reduced to 8% at border zones—operates on a cash basis with refundable excess balances.

The global Pillar 2 regime looms large for Mexican multinationals, even though formal legislation is still pending. Companies are already modeling top‑up tax liabilities to avoid surprise penalties, leveraging PwC’s Beacon engine and other tools to navigate the complex calculations. Early adopters report steep compliance costs, echoing concerns raised by Germany and other jurisdictions about administrative overhead versus revenue gains. Meanwhile, Mexico’s “Plan Mexico” seeks to offset potential disincentives by offering targeted incentives—especially in the southern states—to sustain the nearshoring wave driven by supply‑chain realignments away from China.

U.S. investors are reshaping their entry strategies, favoring well‑designed structures over the ad‑hoc approaches of a decade ago. The maquila regime remains a cornerstone, allowing foreign owners to retain equipment and inventory abroad while enjoying income‑tax exemptions and deferred VAT on temporary imports. Recent trade talks between the U.S., Mexico and Canada add uncertainty, but temporary‑import provisions and customs‑tax suspensions continue to make Mexico attractive for manufacturing and re‑export operations. Practitioners advise early planning, treaty analysis, and proactive engagement with tax authorities to capture refunds and mitigate capital‑gains exposure, ensuring a smoother transition into the evolving cross‑border tax environment.