Understanding Tax Cuts and Jobs Act

The purpose of this article is to assist you in understanding the new tax law. On December 22, 2017, President Trump signed the Tax Cuts and Jobs Act (TCJA) into law. New official name: “An Act to provide for reconciliation pursuant to titles II and V of the concurrent resolution on the budget for fiscal year 2018.”

It is a long-awaited tax cut affecting all individuals and businesses. The TCJA will take effect January 1, 2018, unless otherwise noted. The major changes to tax law are described below in a concise manner.

  1. The end of Obamacare’s individual mandate to buy health insurance

For 2017 tax year (hereinafter “Currently”), the individual mandate established by the Affordable Care Act (ACA), known as Obamacare, requires by law that people either buy health insurance or pay a penalty.

New law: eliminates the legal mandate to buy health insurance beginning in 2019.

Observation: You are not required to buy health insurance for tax years after December 31, 2018

  1. Lower Income tax rates for almost all taxpayers

Currently, seven brackets in individual tax code are: 10%, 15%, 25%, 28%, 33%, 35%, and 39.6%.

New Law: preserves the seven income tax brackets but lowers tax rates and thresholds.

Tax Bracket         Taxable Income Singles / couples

10 percent          Up to $9,525 / Up to $19,050

12 percent          $9,526-$38,700 / $19,051-$77,400

22 percent          $38,701-$82,500 / $77,401-$165,000

24 percent          $82,501-$157,500 / $165,001-$315,000

32 percent          $157,501-$200,000 / $315,001-$400,000

35 percent          $200,001-$500,000 / $400,001-$600,000

37 percent          Over $500,000 / Over $600,000

  1. Standard Deduction doubled

Under current law, taxpayers can either itemize their deductions or claim the Standard Deduction.

Currently, the Standard Deduction amounts are $6,350 for singles, $9,350 for heads of households (HOH), and $12,700 for couples.

New law: increases to $12,000 for singles, $18,000 for HOH, and $24,000 for couples filing jointly. The increased standard deduction ends after 2025.

Observation: The doubling of the standard deduction, a monumental change, will result in almost 90% of taxpayers claiming the Standard Deduction instead of Itemized Deduction. Remember, you now need to change 2018 withholdings from your paycheck effective January 1, 2018

  1. Personal and Dependent Exemptions eliminated

Currently, $4,050-per-person personal exemption is available for yourself, your spouse and each of your dependents.

New law: eliminates; the exemption returns after 2025.

Observation: How well the standard deduction and child tax credit increases offset the elimination of the personal exemption depends on family size and filing status.

  1. Child Tax Credit increased

The Child tax credit is currently $1,000 per child. It is non-refundable but the Additional Child Tax Credit makes it refundable if you are eligible. The child tax credit is available with income up to $75,000 / $110,000 singles/couples. Currently, there is no family tax credit.

New law: increases Child Tax Credit to $2,000 per child under age 17 (up to $1,400 is refundable) while creating a new Family Tax Credit $500 for other dependents such as a child 17 or older, an elderly parent, or an adult child with a disability. The child tax credit phases out starting at: $200,000 / $400,000 singles/couples.The Additional Child Tax Credit merges into the Child Tax Credit.

  1. Itemized deductions

Itemized deductions under current law include 6 categories of deductions that are addressed: Medical Expenses, Taxes (Income tax, Sales Tax, and real estate tax), Mortgage Interest, Gifts to Charity, Casualty and Theft Losses, and Miscellaneous Deductions. Under the new tax law, these deductions are either limited or eliminated.

Current law: Total itemized deductions may be reduced, if your adjusted gross income for 2017 exceeds $261,500 for singles, $313,800 for couples ($156,900 for married filing separately), and $287,650 for heads of household.

New law: The itemized deduction limits are repealed through the 2025 tax year.

(i) Mortgage interest deduction limited

Under current law, homeowners can deduct mortgage interest paid on the first $1,000,000 of a mortgage. The $1,000,000 cap applies to a mortgage on two houses (primary residence plus a second home).  Additionally, the homeowner can deduct mortgage interest on up to $100,000 of home equity loan interest.  Homeowners can also deduct the mortgage interest on a 2nd home or vacation home.

New law:  For current mortgage holders, there is no change. The $1 million cap remains for existing homes. New cap $750,000 applies only to new mortgages beginning Jan. 1, 2018. Eliminates deduction for interest on home equity loan effective 2018.  No mortgage interest is deductible on a second home or vacation home.  Mortgage interest only on a primary residence is deductible starting 2018.

 (ii) State and local tax (SALT) limited

Currently, either state and local income tax or sales tax deduction, as well as real estate taxes deductions, are available without any limit. No cap under current law!

New law: SALT capped at $10,000 for taxes including income tax, real estate tax, and property tax.

(iii) Medical Expenses tax deduction floor lowered

Currently, medical expenses exceeding 10% of Adjusted Gross Income (AGI) are deductible.

New law: lowers the floor to 7.5% of AGI for the 2017 and 2018 tax years

(IV) Casualty Losses restricted

Currently, casualty and theft losses can be deducted as an itemized deduction to the extent that they exceed 10% of adjusted gross income plus $100.

New law: restricts the deduction to only losses attributable to a presidentially declared disaster.

(V) Employee Business Expenses eliminated

Currently, unreimbursed employee business expenses - job travel,  union dues, and job education are deducted to the extent that they exceed 2% of adjusted gross income.

New law: eliminates all employee business expenses – nothing is deductible

(VI) Miscellaneous Expenses eliminated

Currently, certain miscellaneous expenses, such as safe deposit box fees, tax preparation fees, and investment expenses are deducted to the extent that they exceed 2% of adjusted gross income.

New law: eliminates all miscellaneous expenses subject to the 2% AGI limitation

Itemized deductions not subject to the 2% limitation are retained

  1. Sale of Principal Residence preserved

Currently, singles can exclude $250,000 and couples can exclude $500,000 of gain on the sale of a principal residence if they have occupied it as a principal residence for 2 out of the prior 5 years.

New law: preserves

  1. Moving Expense Deduction eliminated

Currently, moving expenses, generally costs of moving a taxpayer and his family and their belongings from Point A to Point B, are deductible.  If the employer pays for these expenses, they are not income to the employee and not subject to withholding income tax or FICA tax for the employee.

New law:  eliminates the deduction for moving expenses except for members of the military

Observation: This means that any move, even those that are required for employment, are not deductible by the employee and are taxable income to the employee if paid for by the employer.

  1. Educational tax breaks preserved

Currently, low and middle-income Americans can deduct up to $2,500 a year in student loan interest. Tuition waivers for graduate students who work as research or teaching assistants remain tax-free. The American Opportunity Tax Credit allows up to $2,500 credit for the first four years of college when working towards a degree. The Lifetime Learning Credit up to $2,000 is available for an unlimited number of years for certain costs of post-secondary or graduate courses or courses to acquire or improve your job skills.

New law: preserves American opportunity credit, Lifetime Learning Credit, and Student loan interest deduction.
Graduate students continue to remain exempt from income tax on tuition waivers
Teachers continue to deduct up to $250 for classroom materials.
Expands use of section 529 (Qualified Tuition Programs, or QTPs) savings accounts to include K-12 private school tuition. Up to $10,000 can now be distributed annually to cover the cost of sending a child to a “public, private, or religious elementary or secondary school.”

  1. Alternative minimum tax (AMT) exemption increased

The Alternative minimum tax (AMT) is a supplemental income tax levied to ensures wealthy taxpayers pay a minimum income tax. For high-income taxpayers, the tax liability is computed twice: regular income tax and income tax under the AMT rules, requiring them to pay the higher of the two amounts. Currently, for 2017, the AMT exemption amount is $54,300 for singles and $84,500 for couples who file jointly. The AMT exemption starts phasing out at $120,700 for singles and $160,900 for couples.

New law: preserves AMT but raises the exemption amount to $70,300 for singles and $109,400 for couples. The income level above which the AMT exemption amount will start reducing is $500,000 for singles and $1 million for couples. The actual 28% AMT rate remains unchanged.

Observation: The AMT will now affect fewer taxpayers. Created in 1969 to prevent wealthy taxpayers from avoiding federal income tax liability, the AMT expanded over time to hit middle-income taxpayers.

  1. The corporate tax rate lowered

The corporate tax rate currently varies from 15% to 35%.

New law: a flat 21% rate (permanent) starting January 1, 2018

  1. The corporate alternative minimum tax (AMT) repealed

The corporate AMT tax rate is currently 20 percent.

New law: Corporate AMT is eliminated.

  1. New deduction for Pass-through Businesses

The vast majority of businesses (about 95% of the 26 million businesses in the U.S.) are set up as pass-through entities including sole proprietorships, partnerships, LLCs, and S-corporations.  The net business income of a pass-through entity (other than a C-corporation) is currently divided among its owners who pay tax on their individual tax returns at individual income tax rates, which rise as high as 39.6%.

New law: New tax code Section 199A creates a new 20% tax deduction of your qualified business income (QBI), phasing out at $157,500/ $315,000 of singles / couples.  The deduction phases out from $157,500 to $207,500 (range $50,000)/ $315,000 to $415,000 (range $100,000) for singles / couples. QBI is generally net income without regard to salary or Guaranteed Payment.

Example: If your QBI is $157,500, your deduction is $31,500, or 20% of your QBI. In this example, you pay income tax at the ordinary income tax rates on $126,000, not $157,500.

Once your QBI is above the threshold amount $157,500 (single) or $315,000 (couples), the computation of this 20% deduction is subject to several limitations, which are complex.

Observation: The new deduction will reduce the taxable income of small businesses, igniting small-business growth.

  1. Doubles the Estate tax exemption

The estate tax is a tax on the transfer of property after someone’s death. Currently, the first $5.49 million in assets and about $11 million for couples are exempt from the estate tax.  Beneficiaries also receive a “step-up” in basis for any assets inherited.

New law: The top rate of 40 percent would apply to estates exceeding $11.2 million for singles and $22.4 million for couples; expires after 2025. No change in beneficiaries receiving a “step-up” in basis to fair market value at death for any assets inherited.


This is the most significant tax cut since President Ronald Reagan’s Tax Reform Act of 1986. Critics say the debt-financed tax cuts risk higher interest rates, inflation, and massive new debt while supporters note that tax revenue generated by economic growth will offset much of the new debt. According to the nonpartisan Joint Committee on Taxation, the changes in the tax code are expected to reduce federal tax revenue [thereby, adding to the existing record high $20 trillion federal deficit] by an estimated $1.46 trillion over the next 10 years. Whether this massive tax cut will pay for itself with revenue generated through more jobs and higher wages remains to be seen.

If you want to find out how the new tax law affects you, it is a good idea to make an appointment with a tax professional.

Reminder:  This article only covers the highlights of the new tax law. There are many other changes affecting individuals and businesses.

Important note: Except for Medical Expenses tax deduction threshold reduced from 10% to 7.5% of AGI for 2017, this new tax law would not apply to your 2017 tax return (due April 17, 2018)

Disclaimer: This article is for educational purpose only. It is general in nature, and is not intended to and should not be relied upon or construed as legal, financial, or tax advice regarding any specific issue or factual circumstance.

About Author

Shiv R Jhawar is an Enrolled Agent (EA) with over 3 decades of experience as a sole tax accounting practitioner in Chicago under the firm name of SRJ Consulting. As an EA, Jhawar can represent taxpayers before the Internal Revenue Service (IRS) in audits, collections, and appeals in all 50 states with the same rights and privileges as CPAs and Attorneys.  Jhawar holds a Master of Accounting Science degree from the University of IL at Urbana-Champaign.  He is also the author of the inspiring book, Building a Noble World. To learn more, visit his website at www.srjtax.com.

3 thoughts on “Understanding Tax Cuts and Jobs Act”

  1. SRJ Consulting have been preaparing my Tax returns for over 15 years ” and find them to be first class in preparation of all my Tax needs,. Shiv R Jhawar is very knowalage in all tax changes and is very easy to talk with, as and when I have any qestions . Would not hesitate to recommend this company looking for a tax preparation . and other services . Brian D Margolis Va .

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