Hence we perceive that the clause which declares the supremacy of the laws of the Union, like the one we have just before considered, only declares a truth, which flows immediately and necessarily from the institution of a federal government.
More immediately, taxpayers in high-tax states are rushing to see whether they can seek extra relief ahead of a new cap on the state and local tax deduction that will go into effect on Jan. 1. Taxpayers will get to deduct only up to $10,000 in both property and income or sales taxes going forward, and GOP negotiators specifically banned people from prepaying 2018 income taxes this year for an extra tax break.
1 If your filing status is head of household or single, your IRA tax deduction starts to phase out when your AGI reaches $61,000 and completely disappears when you reach $71,000.2  If you and your partner file are married filing jointly, the IRA deduction begins to phase out when you reach $98,000 and tops out at $118,000. If your filing status is head of household or single, your IRA tax deduction starts to phase out when your AGI reaches $61,000 and completely disappears when you reach $71,000.