Service boundary: Education and return reporting only. Monaco CPA does not monitor deductions, recommend transactions, select or establish retirement plans, or promise a tax result. Retirement work is limited to contribution-limit and return treatment for client-established accounts.
In This Article
- NJ BAIT Election
- Retirement Plan Contributions
- Home-Office Deduction
- Vehicle Expenses
- Health-Insurance Premiums
- Reporting and Record Boundaries
- Related Reading and Service Boundary
- Frequently Asked Questions
- Request a Written Scope
NJ small-business returns can omit or misclassify deductions when eligibility, records, and federal-versus-state treatment are not reviewed. The five topics discussed are the BAIT election, contribution reporting for client-established retirement accounts, the home-office deduction, vehicle expenses, and self-employed health-insurance premiums. NJ retirement treatment depends on the entity and participant capacity: NJ-BUS-1 instructs a qualifying sole proprietor or partner to deduct qualified contributions to a self-employed 401(k) plan up to the federal limits; employee elective deferrals are excludable under the 401(k) exception in N.J.S.A. 54A:6-21; and employer contributions to qualified plans, including for an S-corporation shareholder-employee, receive tax-deferred treatment under current NJ guidance. SEP, SIMPLE IRA, and SARSEP contributions follow separate current-taxation and basis rules. Federal Section 162(l) and the separate NJ Worksheet F computation each have eligibility, earned-income, allocation, and no-double-deduction limits; neither automatically equals total premiums paid.
The following five topics each require separate eligibility, substantiation, and federal-versus-NJ analysis.
NJ BAIT Election
A payment by an eligible pass-through entity under a valid annual BAIT election may change the federal entity-level deduction and owner-credit computations outside the individual SALT-cap calculation. The result depends on the statutory base, member allocation, QBI, credits, deduction choice, payment timing, and the complete entity and owner returns; no saving is promised.
Retirement Plan Contributions
For a client-established SEP-IRA, the federal contribution computation for a self-employed owner generally uses the Publication 560 reduced rate rather than a flat 25% of Schedule C profit. The $70,000 2025 and $72,000 2026 figures are Section 415(c) annual-additions limits, subject to plan terms, compensation, the self-employed contribution worksheet, and other contributions. Monaco CPA does not recommend, select, or establish a plan. For NJ, a self-employed owner's SEP contribution does not produce a current deduction and instead creates NJ basis. By contrast, NJ-BUS-1 permits qualified self-employed 401(k) contributions for a sole proprietor or partner up to the federal limits; W-2 employee elective deferrals use the N.J.S.A. 54A:6-21 exclusion; and qualified employer contributions, including for an S-corporation shareholder-employee, receive tax-deferred treatment. Employee and employer contributions to SEP, SIMPLE IRA, and SARSEP arrangements follow the separate current-taxation rules in NJ's wage guidance. Compute the federal and NJ treatment by plan, entity, participant capacity, qualification, and contribution source.
Home-Office Deduction
A general home-office route requires exclusive and regular business use plus a qualifying principal-place-of-business, client-or-patient, or separate-structure use. Administrative or management activity can establish a principal place only when the taxpayer has no other fixed location for substantial administrative or management work. Section 280A(c)(2) separately covers regular use of a separately identifiable space suitable for storage of inventory or product samples when the taxpayer sells products at wholesale or retail as a trade or business, keeps the inventory or samples at home for that business, and the home is the business's sole fixed location. Section 280A(c)(4) separately covers regular daycare use for children, persons age 65 or older, or persons physically or mentally unable to care for themselves when the applicable licensing, application, or exemption requirement is met. Those two routes have limited exceptions to exclusive use, and daycare applies the required time-and-space percentage.
The simplified method is $5 per square foot of allowable area, capped at 300 square feet; therefore, $1,500 is the ceiling, not an automatic result. The computation uses the allowable area and qualified months and is limited by gross income from the qualified business use; a simplified-method excess does not carry forward. The actual-expense method requires documented and reasonably allocated direct and indirect expenses, applies its own gross-income limit and carryforward rules, and can include allowed-or-allowable depreciation with later disposition consequences. An allowable Schedule C home-office amount reduces Schedule C net income before that amount flows to Schedule NJ-BUS-1; the actual activity, entity, income category, adjustments, and complete return determine the NJ result.
Vehicle Expenses
The optional business standard mileage rates are 72.5 cents per eligible mile for January 1-June 30, 2026 and 76 cents for July 1-December 31, 2026 (70 cents in 2025). Eligibility and method choice still depend on the vehicle and use facts. For an owned vehicle, the standard rate generally must be chosen in the first business-use year to preserve later choice. If the standard rate is chosen for a leased vehicle, it must be used for the entire lease period, including renewals. The rate is unavailable when the taxpayer uses five or more cars at the same time, has claimed depreciation other than straight line (including MACRS), a Section 179 deduction, or the special depreciation allowance, or has claimed actual expenses after 1997 for a leased car. The actual-expense method has separate allocation and substantiation rules. A mileage app can assist, but the records must capture the Pub. 463 time, place or destination, business purpose, business miles, and total-use facts; current law and supported facts, not the app, determine business versus personal treatment.
Health-Insurance Premiums
Federal Section 162(l) may allow an individual with Schedule C or F net profit, an individual using an applicable Schedule SE optional method, a partner with net earnings from self-employment, or a qualifying more-than-2% S-corporation shareholder with wages to deduct eligible premiums for a plan established under the trade or business, covering the taxpayer, spouse, dependents, and, federally, a child who had not reached age 27 at year-end. For a Schedule C or F filer, the policy may be in the business's or individual's name. For a partner, the policy may be in the partnership's or partner's name, but partner-paid premiums require partnership reimbursement and reporting as guaranteed payments on Schedule K-1. For the shareholder route, the policy may be in the S corporation's or shareholder's name, but shareholder-paid premiums require S-corporation reimbursement and reporting in Form W-2 Box 1. The deduction is tested month by month and excludes amounts for any month in which the taxpayer was eligible at any time to participate in a subsidized plan maintained by the taxpayer's employer, the spouse's employer, the employer of a dependent, or the employer of a child who was under age 27 at year-end, even without enrollment. It is limited by earned income from the applicable business and must be coordinated with the premium tax credit and other medical or business deductions.
NJ applies its separate N.J.S.A. 54A:3-5 rule to a qualifying self-employed individual or more-than-2% S-corporation shareholder: eligible premiums paid for the taxpayer, spouse or partner, and NJ dependents are claimed through Worksheet F without the ordinary 2% medical-expense floor, subject to the business earned-income and no-double-deduction limits. NJ does not extend this covered-person rule merely because a child was under age 27 federally; the child must meet the NJ dependent requirement. Apply the federal and NJ computations separately.
Reporting and Record Boundaries
Tax preparation applies current reporting rules to client-supplied facts and supportable records. Review can identify items requiring classification or substantiation, but it cannot guarantee completeness, a deduction, or a tax outcome.
Related Reading and Service Boundary
Tax preparation applies reporting rules to client-supplied facts and supporting records. Professional review may or may not change a return, and Monaco CPA does not monitor accounts, proactively recommend transactions, or promise that a fee will produce savings.
Related reading: NJ BAIT Election | Retirement Plans for NJ Business Owners | Health Insurance Deductions | Tax preparation services
Official sources: 2025 NJ-1040 instructions (opens in a new tab) | NJ business-income guidance (opens in a new tab) | NJ wage and retirement-contribution guidance (opens in a new tab) | NJ deduction guidance (opens in a new tab) | IRS Form 7206 instructions (opens in a new tab) | IRS Publication 560 (opens in a new tab) | IRS Publication 587 (opens in a new tab) | IRS Publication 463 (opens in a new tab) | IRS standard-mileage rates (opens in a new tab)
Frequently Asked Questions
What deductions does NJ not allow that the federal government does?
For individual Gross Income Tax, New Jersey does not subtract the federal Section 199A deduction; any available NJ-BUS-2 Alternative Business Calculation Adjustment and carryover is a separate state computation by eligible business-income category. New Jersey does not conform to the current federal 100% Section 168(k) allowance, but GIT-DEP, entity, member, and Corporation Business Tax adjustment mechanics differ. The current $25,000 Section 179 maximum is a GIT-DEP rule, not a universal limit for every NJ return; the TY2026 federal maximum is $2,560,000, subject to the separate federal qualified-property, investment-phaseout, taxable-income, business-use, election, and recapture rules. An individual investment or capital-capacity disposition-category loss is floored at zero for that year and does not carry forward, while business categories, entities, and any NJ-BUS-2 adjustment require their own analysis. The NJ-1040 uses specified state deductions rather than federal itemization.
Can NJ business owners deduct home office expenses?
An eligible Schedule C filer may claim an allowable home-office amount under the general exclusive-and-regular-use routes or the limited Section 280A(c)(2) storage or (c)(4) daycare exceptions. The simplified election uses $5 per allowable square foot up to 300 square feet, qualified-month and gross-income limits, and no simplified-method carryforward. The actual method uses documented allocation, its own income limit and carryforward rules, and depreciation where applicable. An allowable Schedule C amount reduces net income before the amount flows to Schedule NJ-BUS-1; the actual activity, entity, NJ category and adjustments, and complete return determine the state result.
Is there a standard deduction in New Jersey?
The NJ-1040 does not provide a general standard deduction. Under the 2025 instructions, its line-specific exemptions include $1,000 regular exemptions for the taxpayer and, when the filing or registration conditions are met, a spouse or civil-union partner on a joint return or a registered domestic partner; separate $1,000 senior and blind-or-disabled exemptions for eligible taxpayers and spouses or civil-union partners on joint returns; $6,000 veteran exemptions for eligible taxpayers and spouses or civil-union partners on joint returns; $1,500 exemptions for each qualifying dependent child or other dependent; and an additional $1,000 exemption for each qualifying dependent college student. Filing-status, registration, age, disability, military-service, dependency, student, and documentation requirements apply. An eligible homeowner or tenant compares the property-tax deduction, subject to the applicable $15,000 maximum and eligibility rules, with the alternative property-tax credit. Ordinary unreimbursed medical expenses are subject to the 2% NJ gross-income floor, while a qualifying N.J.S.A. 54A:3-5 self-employed health-insurance amount enters separately on Worksheet F without that floor. NJ does not provide a general federal-style charitable-contribution deduction, but a qualifying contribution of NJ real property for conservation purposes has its own limited NJ-1040 deduction. Use the instructions for the actual tax year and facts.
Request a Written Scope
Tax rules change frequently. Use the contact form to request a written scope; submitting it does not promise a call, engagement, or outcome. Greg Monaco is a NJ-licensed CPA and the firm's sole practitioner.
