Trump’s ‘big beautiful bill’ could deliver 45.5% ‘SALT torpedo’ for high earners, tax pro says

President Trump's new legislation temporarily raises the federal State and Local Tax (SALT) deduction limit to $40,000 starting in 2025, but introduces a significant phaseout for higher earners. This cap begins to reduce at $500,000 Modified Adjusted Gross Income (MAGI) and drops to $10,000 at $600,000 MAGI, creating a "SALT torpedo" effect where individuals in this income bracket could face an effective federal tax rate of 45.5% on earnings within that specific range. Consequently, tax experts are advising individuals approaching the $500,000 MAGI threshold to project their tax liabilities and explore strategies to reduce their MAGI.

Analysis

President Trump's proposed legislation introduces a temporary increase in the State and Local Tax (SALT) deduction cap to $40,000, effective in 2025, but this benefit is significantly curtailed by a new phaseout provision for high earners. The key concern for investors is the creation of a 'SALT torpedo,' an exceptionally high marginal tax rate for individuals with a Modified Adjusted Gross Income (MAGI) between $500,000 and $600,000. Within this income range, the $30,000 additional deduction is clawed back at a rate of 30% for every dollar earned, effectively dropping the cap back to $10,000 once MAGI hits $600,000. This mechanism can lead to a surprising federal tax rate of 45.5% on that specific $100,000 income slice, as illustrated by tax experts. The cautious tone and moderately negative sentiment signal reflects this unexpected tax penalty, which could negatively impact financial planning for affluent individuals, particularly those in high-tax states who were expected to be primary beneficiaries of an expanded SALT deduction.

Key Decisions for Investors

• Investors, particularly high-earners with income approaching the $500,000 MAGI threshold, should immediately engage with tax advisors to model their potential 2025 tax liability under this new provision.
• It is critical to evaluate income management strategies, such as deferring income or reconsidering large capital gains realizations and Roth conversions, to potentially keep MAGI below the $500,000 cliff where the phaseout begins.
• Wealth managers should proactively identify clients within or near the $500,000 to $600,000 MAGI range to advise them on this 'tax surprise' and help implement tax-optimization strategies to mitigate the impact of the 'SALT torpedo'.