In This Article

  1. 1. NJ BAIT Election
  2. 2. Retirement Plan Contributions
  3. 3. Home Office Deduction
  4. 4. Vehicle Expenses
  5. 5. Health Insurance Premiums
  6. The Lesson
  7. Key Takeaway
  8. Frequently Asked Questions
  9. Ready to File With Confidence?

Missed deductions show up on virtually every NJ small business return that hasn't been CPA-reviewed. The five most commonly overlooked deductions for NJ small business owners are the BAIT election (which can generate thousands in federal savings for pass-through owners above the SALT cap), SEP-IRA contributions (federal only for NJ - NJ does not allow a current-year deduction; Solo 401(k) employee deferrals are excludable from NJ gross income per N.J.S.A. 54A:6-21; the employer share is not clearly addressed - confirm for your facts), the home office deduction (federal + NJ business-income flow-through), vehicle expenses, and self-employed health insurance premiums (federal §162(l) above-the-line; NJ allows its own full deduction under N.J.S.A. 54A:3-5 via Worksheet F, not subject to the 2% medical floor).

Missed deductions are remarkably common on NJ small business returns. Here are the five most common.

1. NJ BAIT Election

The single most frequently missed opportunity. Pass-through owners who itemize and are over the SALT cap can generate thousands in federal savings.

2. Retirement Plan Contributions

Many self-employed owners don't maximize or even establish a retirement plan. A SEP-IRA allows up to 25% of compensation - effectively about 20% of net profit (max $70,000 for 2025, $72,000 for 2026). Important NJ caveat: NJ does NOT allow a current-year deduction for these self-employed retirement plan contributions - the contributions create NJ basis recoverable tax-free in retirement, but do not reduce NJ taxable income in the contribution year. The federal deduction remains valuable.

3. Home Office Deduction

The simplified method gives $1,500 with minimal recordkeeping ($5 per sq ft, max 300 sq ft). The regular method can yield more. The home office deduction reduces Schedule C net income, which flows through to NJ business income on Schedule NJ-BUS-1 - so it benefits both federal and NJ taxes.

4. Vehicle Expenses

72.5 cents per mile for January 1-June 30, 2026 and 76 cents for July 1-December 31, 2026 (70 cents in 2025). A simple mileage tracking app running in the background solves the documentation problem.

5. Health Insurance Premiums

Self-employed individuals can deduct premiums for themselves and families as a federal above-the-line deduction under IRC §162(l). NJ has its own parallel deduction under N.J.S.A. 54A:3-5: the premiums are deductible on the NJ-1040 (claimed via Worksheet F on the medical-expense line) WITHOUT the 2% gross income floor that applies to regular medical expenses, capped at earned income from the business. Both the federal and NJ deductions are commonly missed.

The Lesson

"Tax preparation isn't just data entry - it's an analysis of your situation to identify every legitimate deduction," says Greg Monaco, CPA. This comes up a lot with photographers and music artists who miss equipment depreciation and other industry-specific write-offs.

Key Takeaway

Tax preparation is not data entry. It is an analysis of your specific situation to identify every legitimate deduction. A CPA who asks questions about your business operations, reviews your prior returns, and proactively suggests strategies will consistently save more than the fee costs.

Related reading: NJ BAIT Election | Retirement Plans for NJ Business Owners | Health Insurance Deductions | Tax preparation services

Frequently Asked Questions

What deductions does NJ not allow that the federal government does?

New Jersey does not conform to several major federal deductions. NJ does not allow the QBI deduction (Section 199A), does not conform to federal bonus depreciation, caps Section 179 at $25,000 (vs. $2,560,000 federally for 2026), and does not allow capital loss carryforwards. NJ also does not allow itemized deductions in the same way as the federal return; NJ has its own set of allowable deductions on the NJ-1040.

Can NJ business owners deduct home office expenses?

Yes. NJ follows the federal home office deduction rules for self-employed individuals via Schedule C net-income flow-through to Schedule NJ-BUS-1. You can use the simplified method ($5 per square foot, up to 300 square feet, for a maximum $1,500 deduction) or the regular method based on actual expenses proportional to the business-use percentage of your home. Because the deduction reduces Schedule C net business income before the figure flows to NJ, it reduces both federal AGI and NJ taxable business income.

Is there a standard deduction in New Jersey?

No. New Jersey does not offer a standard deduction. NJ provides personal exemptions ($1,000 per filer, $1,500 per dependent) and allows specific deductions such as property taxes (up to $15,000) and medical expenses exceeding 2% of NJ gross income. NJ does NOT allow charitable contribution deductions for individuals on the NJ-1040. This means NJ filers cannot simply take a flat deduction amount, and every eligible NJ deduction must be claimed individually.

Ready to File With Confidence?

Tax rules change frequently. If anything in this guide applies to your situation, a quick review with a CPA can prevent costly mistakes. Greg Monaco is a NJ-licensed CPA (License #20CC04711400). Greg remains responsible for every engagement and reviews, approves, and signs all client-facing work. Trained staff may assist under his direct supervision and confidentiality procedures.

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