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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.

For tax years 2018 through 2025 the deduction for personal and dependency exemptions is effectively suspended by the Act reducing those amounts to zero.

Long-Term Capital Gains (and Qualified Dividends) have been subject to special maximum tax rates. The Act generally retains the maximum tax rate structure.
For 2018 the 15% rate applies once the following income limits are met: a. Joint returns - $77,200
b. Head of Household returns - $51,700
c. Single returns - $38,600
d. Married Separate returns - $38,600
e. Trusts and Estates - $2,600

For 2018 the 20% rate will apply to long-term capital gains and qualified dividends above these income levels:
a. Joint returns - $479,000
b. Head of Household returns - $452,400
d. Married Separate returns - $239,500
e. Trusts and Estates - $12,700

Prior to the Act, a 0% capital gain rate applied to capital gains where the taxpayer is paying in the 10% or 15% rate on ordinary income; a 15% capital gain rate applied to any taxpayer paying any other rate below 39.6%; and a 20% rate applied to the high-income taxpayers paying 39.6% on ordinary income.

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.

Pursuant to the Act, the child tax credit is increased to $2,000 per eligible child for 2018 through 2025.

The income level at which the credit phase-out begins is increased to $400,000 for taxpayers filing married filing jointly and $200,000 for all others. The credit continues to phase out at a rate of $50 for every $1,000 that AGI exceeds the threshold amounts.

The refundability of the credit was also modified so that the earned income threshold is reduced to $2,500.
No child tax credit will be allowed unless the taxpayer provides the child’s Social Security Number.
The Act creates a new non-refundable $500 credit for each dependent (using the definition that exists currently) other than a qualifying child.

Under pre-Act provisions, a taxpayer could claim a child tax credit of up to $1,000 per qualifying child under the age of 17. This amount would be phased out by $50 for every $1,000 that the taxpayer’s AGI exceeded certain threshold amounts.

For tax years beginning after December 31, 2017 and before January 1, 2026, seven brackets will apply to individuals: 10%, 12%, 22%, 24%, 32%, 35% and 37%.

No change has been made to the filing statuses that apply to individuals.
In 2017 all taxpayers (other than those filing Married Filing Separately) became subject to the 35% bracket at the same level of taxable income ($416,700). For tax years beginning after December 31, 2017 and before January 1, 2026, the 2nd highest bracket will now apply based upon filing status.

1 Unmarried taxpayers will have the 35% bracket apply once taxable income exceeds $200,000.

2. Joint filers will have the 35% bracket apply once taxable income exceeds $400,000.

3. Separate filers will have the 35% bracket apply once taxable income exceeds $200,000.

4. For unmarried taxpayers (both Single and Head of Household filing statuses), the top bracket applies to taxable income in excess of $500,000.

5. Married taxpayers filing jointly will have the 37% rate apply once taxable income exceeds $600,000, with one-half that amount ($300,000) being the threshold for married taxpayers filing separate return.

For tax years beginning after December 31, 2017 and before January 1, 2026 all miscellaneous itemized deductions that were previously subject to a 2% AGI limitation are suspended.

Among the items included in this elimination are:
All unreimbursed employee business expenses;
Union dues
Brokerage fees
All expenses related to tax return preparation;
Appraisal fees for charitable contributions;
Investment expenses.

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.

Two significant changes were made to the AMT for the years 2018 through 2025. All of the changes will be subject to inflation adjustment in years after 2018.

a. The exemption amounts that were scheduled to be $86,200 for joint filers (one-half of that amount for separate filers) and $55,400 for unmarried taxpayers, for 2018, have been increased to $109,400 for joint filers ($54,700 for separate filers) and $70,300 for all others.

b. The AMTI threshold, above which the exemption is phased out $1 for every $4 of excess, has been increased to $1,000,000 for married taxpayers filing jointly and $500,000 for all others. These amounts were scheduled to be $164,100 for joint filers, $82,050 for separate filers and $123,100 for all other 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.