Background
Prior to the Tax Cuts and Jobs Act (“TCJA”), there was no direct limitation on an individual taxpayer’s deduction of his or her state and local taxes (“SALT”) on the federal individual income tax return. Of course, for high-income taxpayers, the SALT deduction often triggered the alternative minimum tax.
As of 2018, as a result of the TCJA, the SALT deduction for individuals was capped at $10,000 per year for both single and married taxpayers filing jointly ($5,000 for married taxpayers filing separately). Hence, the cap contains an inherent “marriage penalty.”
The SALT cap was added to the TCJA, in part, as a compromise for an increase in the standard deduction (almost doubling it from pre-TCJA days). It is, however, set to sunset at the end of this year.