The article explains:
Homeowners will be allowed to pre-pay their 2018 state and local real estate property taxes before the end of the year and deduct them on their 2017 returns only under limited circumstances, the Internal Revenue Service said Wednesday.
The announcement comes after many homeowners in states with the highest property taxes rushed to prepay their 2018 property taxes in hopes of saving on their federal taxes since the deduction will be scaled back in the tax law passed by Republicans last week.
The IRS in its statement said taxpayers can claim an additional property tax deduction on their 2017 returns if taxes are assessed and paid for before the end of the year. Some states and localities allow people to prepay their state and local taxes, including property taxes, but other states and localities that don’t will have to interpret exactly what that means for their residents.
Under the recently passed tax bill, residents in states with high taxes will be limited to $10,000 in state tax deductions. When you consider that some residents of New York, New Jersey, California and certain other states may pay as much as $30,000 in property taxes, that will be a significant change. What this change means to the people in states with reasonable taxes is that the residents of those states will no longer be subsidizing the people who live in high tax states. That is actually a more equitable system–even if the people in the high tax states don’t appreciate the change!