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The IRS standard business mileage rate for 2018 is 54.5 cents a mile
.
The rate for medical expense and moving expense for certain military personnel deductions is 18 cents a mile.

For charitable volunteers the mileage rate is unchanged at 14 cents a mile.

Pursuant to the Act, for tax years beginning after December 31, 2017 and before January 1, 2026, a deduction will only be allowed for interest on a debt that qualifies as Acquisition Indebtedness. No deduction will be allowed for Home Equity debt.

In addition, the Act reduces the amount of eligible Acquisition Indebtedness borrowing to $750,000 for any debt incurred on or after December 15, 2017.

A taxpayer who entered into a binding contract before December 15, 2017 to close on the purchase of a residence before January 1, 2018, and who actually closes on the acquisition before April 1, 2018, shall be considered to have incurred the Acquisition Indebtedness before December 15, 2017.

ii. The old Acquisition Indebtedness limits continue to apply to taxpayers who refinance existing Acquisition Indebtedness as long as the indebtedness resulting from the refinancing does not exceed the amount of the original debt.

For 2017, the deduction for Qualified Residence Interest was limited to interest paid on up to $1,000,000 of borrowing that qualified as “Acquisition Indebtedness” and up to $100,000 of borrowing that qualifies as “Home Equity Indebtedness”.
Acquisition Indebtedness being defined as debt incurred to acquire, construct or substantially improve a principal residence or a second home, with no restriction on the use of Home Equity Indebtedness.

The Act increases the base standard deduction from the inflation adjusted levels that applied in 2017 to:

$12,000 for Single, Qualifying widower and Married filing separately taxpayers.

$24,000 for married taxpayers filing Joint returns,

$18,000 for taxpayers filing as Head of Household.

The additional standard deduction available to taxpayers who are age 65 or older and or blind remain unchanged.
For 2018 the additional amount is $1,300 for married taxpayers and $1,600 for unmarried taxpayers.

The combination of residential property taxes and Income or sales taxes is capped at $10,000.

Property taxes remain fully deductible for taxpayers in a business or for-profit activity, so taxes paid on rental realty can be taken in full on Schedule E.

For tax years beginning after December 31, 2017 and before January 1, 2026, the overall itemized deduction limitation of 3% of the excess of AGI over the threshold amount (applicable to certain itemized deductions) is suspended.

The $250 (as adjusted for inflation) deduction for eligible educators remains at that level.

For 2018, you are required to have minimum essential health coverage through an employer plan, a government program, or other plan, or pay a penalty unless you are exempt from this requirement.

The penalty amount for 2018 is the higher of (1) 2.5% of household income above your filing threshold, or (2) $695 per person in your household ($347.50 per dependent child under age 18), up to a maximum of $2,085. The mandate does not apply after 2018.

To help those of modest means pay premiums for coverage obtained from a government exchange (Marketplace), there’s a premium tax credit. Eligibility for this advanceable, refundable tax credit depends on your household income and other factors.

The credit continues to be available even though the individual mandate ends after 2018.

If you claimed the credit in advance when you obtained coverage for 2018, you have to reconcile what you already applied toward your premiums with what you are actually entitled to; the difference is reported on your tax return.

If you did not receive the credit in advance but are eligible for a credit, you can claim it on your return.

If you do not claim the premium tax credit and qualify for Trade Adjustment Assistance (TAA), you may qualify for the health coverage tax credit of 72.5% of premiums (25.14).

Section 280F limits the §179 expensing and depreciation deductions (including bonus depreciation) with respect to certain passenger automobiles.

For passenger automobiles placed into service after December 31, 2017 the maximum amount of allowable depreciation is increased to $10,000 for the first year;
$16,000 for the second year; $9,600 for the third year; and $5,760 for the fourth and later years. Each of these amounts will be indexed for inflation in years after 2018.

The maximum first-year bonus depreciation (which was scheduled to reduce to $6,400 in 2018 and $4,800 in 2019) will remain at $8,000.

For property placed into service after December 31, 2017, qualified leasehold improvement, qualified restaurant and qualified retail improvement property will be subject to a 15-year recovery period and straight-line depreciation.

The PATH Act permanently extended the enhanced $500,000 maximum amount of expensing available (along with the $2,000,000 phase-out threshold) under §179.

Under the new law, for property placed into service in tax years beginning after December 31, 2017, the maximum amount of expensing is increased to $1,000,000, and the phase-out threshold amount is increased to $2,500,000.

For tax years after 2018 these amounts will be indexed for inflation.

For decedents dying and gifts made after 2017 and before 2026 the basic exemption equivalent exclusion amount is increased to $10,000,000 (with inflation adjustments).

For 2018, the exclusion amount is $11,200,000 per taxpayer or with proper planning $22,400,000 for a married couple.