New Mexico Parts Ways With Federal Depreciation Breaks in 2027
by Will Ramirez, on Nov 15, 2026, 7:00:00 AM
The 2025 federal tax law gave manufacturers two accelerated deductions that can significantly affect capital planning. It restored 100 percent bonus depreciation for qualifying property acquired and placed in service after January 19, 2025, subject to applicable conditions and elections, under Section 168(k), and, under Section 168(n), it added an elective deduction of up to 100 percent of the eligible depreciable basis of qualified production property, subject to use, construction, and placed in service conditions. State treatment of federal accelerated depreciation varies, and New Mexico has decided to diverge from it.
For companies evaluating where to place a capital project, New Mexico’s choice is a reminder that a state does not always follow a federal benefit, and that the state tax result can differ from the federal one.
Recent Program Activity: What Changed
New Mexico is a rolling conformity state, so federal changes to the corporate income tax base generally flow into state law unless the Legislature acts. In March 2026, it acted. Senate Bill 151 decouples New Mexico’s corporate income tax from several federal provisions for tax years beginning on or after January 1, 2027. For capital projects, the central change is an addback: a business must add back the deductions claimed under Section 168(k) and Section 168(n) to the extent they exceed the depreciation that would be allowable under the ordinary rules of Section 168(a) through (j).
The change reduces the immediate state benefit of the federal accelerated deductions. The addback is measured against the depreciation otherwise allowable under Sections 168(a) through (j), so it is not simply a disallowance of all depreciation. Companies should have their tax advisers determine the applicable state basis, deduction timing, and subsequent year treatment. The corporate change applies to tax years beginning on or after January 1, 2027.
The same law takes a different approach to jobs. It extends the state’s High Wage Jobs Tax Credit, allowing qualifying jobs created before July 1, 2036 to remain eligible, where the credit had been set to close to new jobs in 2026. The date alone does not qualify a job; the program’s employer, employee, wage, occupancy, and other statutory conditions still apply. The credit is refundable, and the 2036 date is a job creation cutoff rather than an end date for all claims or payments.
Why It Matters
Federal accelerated deductions are a meaningful factor in capital planning, and New Mexico’s decision not to follow them for 2027 changes the state side of the calculation. Depending on a taxpayer’s circumstances, the addback may increase current New Mexico taxable income and reduce the near-term state benefit of a new investment. It does not, by itself, establish how New Mexico compares with other states on total tax cost, which also depends on rates, apportionment, losses, other deductions, and credits.
For companies, the practical takeaway is project-specific. Projects that create eligible high wage jobs should evaluate the High Wage Jobs Tax Credit alongside the depreciation change, since the state value of a project now depends on both.
What Companies Should Do
Companies planning a New Mexico investment should model the project using the state’s decoupled treatment for tax years beginning in 2027, quantify the addback and its effect on state taxable income, and work through the timing and basis consequences with their tax advisers rather than assuming the federal deductions carry through. Where a project creates qualifying high wage jobs, companies should evaluate the High Wage Jobs Tax Credit, which is refundable and can offset part of the cost.
Because the change applies to tax years beginning on or after January 1, 2027, the timing of an investment and when assets are placed in service can affect the result. This was a March 2026 enactment, so it is best treated as planning for 2027 rather than a new development.
How SSG Can Help
Site Selection Group helps companies compare how states treat both their own incentives and major federal benefits as part of location decisions. We assess how a state’s conformity choices and credits affect total project economics, in coordination with the client’s tax advisers, and we help clients weigh states against one another as these rules change.
