Hi Mary_Monstera,
Due to the recent tax law changes that went into effect in 2018 under the Tax Cuts and Jobs Act, Congress modified the Standard Deduction upward and eliminated Personal Exemptions.
So, unless you have Itemized Deductions in TOTAL that are greater than $12950 for Single filers, $25900 for Married Filing Joint or $19400 for Head of Households, that will determine whether you have the CHANCE to Itemize or will have to live with the Standard Deductions.
Secondly, based on the state you live in, regarding the level of property taxes your home could be subject to, the State and Local Income Tax deductible Limit (including property taxes) is $10,000.
You really would not need to adjust your withholding taxes, as it would be more prudent to have more cash flow to pay for your new mortgage.
