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The alternative minimum tax (AMT) exemption amounts are adjusted for inflation. Here’s what those numbers look like for 2019:

Individual = $71,700
Married Filing Jointly = $111,700
Married Filg Separately = $55,850
Estates and Trusts = $25000

Personal casualty losses occurring in a tax year beginning after December 31, 2017 but before January 1, 2026 are not deductible, unless the loss is incurred as a result of a federally-declared disaster.

For 2018, the contribution limit for traditional IRAs and Roth IRAs is unchanged at $5,500, or $6,500 for those age 50 or older.

The deduction limit for 2018 contributions to a traditional IRA is phased out for active plan participants with modified AGI (MAGI) between $63,000 and $73,000 for a single person or head of household, or between $101,000 and $121,000 for married persons filing jointly and qualifying widows/widowers.

The phaseout range is MAGI between $189,000 and $199,000 for a spouse who is not an active plan participant and who files jointly with a spouse who is an active plan participant.

The 2018 Roth IRA contribution limit is phased out for a single person or head of household with MAGI between $120,000 and $135,000, and for married persons filing jointly and qualifying widows/widowers with MAGI between $189,000 and $199,000.

If you converted your traditional IRA to a Roth IRA in 2018, you cannot undo it; the conversion is permanent.

For 2018, all taxpayers must use Form 1040.
Forms 1040A and 1040EZ have been eliminated.
Form 1040 has been reformatted and redesigned and is supplemented by new Schedules 1 through 6.

The IRS has taken Form 1040, which was a 2 page form, and cut it into 6 pieces,
If you do not have amounts for pieces 2 through 6, then those schedules will not print.

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.

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 2019, the tax bracket amounts have been indexed for inflation.

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.

For contributions made in tax years beginning after December 31, 2017 and before January 1, 2026 the 50% limitation is increased to 60%. Any amounts in excess of the new limit can be carried forward and deducted for up to five years (as was allowed under prior law).

For any contribution made in a tax year beginning after December 31, 2016, the requirement of a charity to provide contemporaneous written acknowledgement as substantiation for any contribution of $250 or more is repealed.

Beginning in 2018, no charitable deduction is allowed for any payment to an institution of higher learning in exchange for which the contributor is given a right to purchase seats at an athletic event.

Prior to the enactment of the new law, charitable contributions were deductible with certain ceilings based upon a percentage of AGI. A 50% of AGI limit applied to cash contributions to public charities and certain private foundations.

For 2018, the tax rate on the employee portion of Social Security is 6.2% on wages up to $128,400, so Social Security tax withholdings should not exceed $7,960.80. Medicare tax of 1.45% is withheld from all wages regardless of amount.

On Schedule SE for 2018, self-employment tax of 15.3% applies to earnings of up to $128,400 after the earnings are reduced by 7.65%. The 15.3% rate equals 12.4% for Social Security (6.2% employee share and 6.2% employer share) plus 2.9% for Medicare.

If net earnings exceed $128,400, the 2.9% Medicare rate applies to the entire amount. One half of the self-employment tax may be claimed as an above-the-line deduction on Schedule 1 of Form 1040.

For tax years beginning January 1, 2019, medical expenses, for all taxpayers, are deductible to the extent that they exceed 10% of youir AGI. It was 7.5% of AGI in 2018.

In addition, the AMT preference related to medical expenses is eliminated.