Every Business Entity. One CPA Firm.
S-Corporation
Due: March 15 (federal) · April 15 (NJ CBT-100S)
Pass-through income and loss reported via Schedule K-1 to each shareholder's personal 1040. S-Corp elections, reasonable compensation analysis, and QBID optimization all handled.
Partnership / Multi-Member LLC
Due: March 15 (federal) · April 15 (NJ-1065)
Partnership income allocated to partners via K-1. Includes multi-member LLCs taxed as partnerships. NJ BAIT election analysis included for eligible pass-throughs.
C-Corporation
Due: April 15 (federal) · May 15 (NJ CBT-100)
Corporate income tax return for C-Corps. Includes deferred tax analysis, accumulated earnings considerations, and coordination with owner compensation strategy.
Sole Proprietor / Single-Member LLC
Due: April 15 (with personal 1040)
Self-employment income and deductions reported on Schedule C within your personal return. Business deductions, home office, vehicle, and S-Corp conversion analysis included.
Business Return Fees — Published Starting Prices
ProAxis publishes its starting prices up front. Every business return is quoted as a fixed fee in the engagement letter before work begins.
- S-Corp return (Form 1120-S) — including Schedule K-1s for shareholders — from $1,200
- Partnership return (Form 1065) — including Schedule K-1s for partners — from $1,200
- C-Corp return (Form 1120) — standard corporate return — from $1,500
S-corporation owners can see what a dedicated engagement includes on the ProAxis S-Corp accountant page. That engagement covers 1120-S preparation, reasonable compensation support, and NJ BAIT coordination.
These are typical published starting prices, not an offer. The final fixed fee is scoped during the engagement and varies by entity complexity. See the full fee schedule on the ProAxis pricing page.
What ProAxis Includes in Every Business Return
A properly prepared business tax return isn't just accurate — it's a planning document. ProAxis CPAs review every return for missed deductions, structural inefficiencies, and year-ahead opportunities. Here's what's included:
- Federal and NJ state return preparation: Every engagement includes both the federal form and the applicable NJ business return — filed together, coordinated, and complete.
- K-1 preparation and distribution: For S-Corps and partnerships, we prepare Schedule K-1s for every shareholder or partner and coordinate timing with their personal 1040 filing.
- Depreciation and Section 179 optimization: We calculate the most advantageous depreciation method and Section 179 election for your equipment and fixed assets, maximizing current-year deductions where appropriate.
- NJ BAIT election analysis: The NJ Pass-Through Business Alternative Income Tax election is one of the highest-value state tax planning moves available to NJ pass-through owners. We evaluate eligibility and projected savings for every eligible client.
- Reasonable compensation review (S-Corps): S-Corp owners must pay themselves a reasonable salary. We document and substantiate reasonable compensation to withstand IRS scrutiny while minimizing self-employment tax exposure.
- Extension filing when needed: If your return can't be completed by the March 15 deadline, we file a timely extension and communicate clearly about what we need to complete the return.
Why Business Returns Require a CPA — Not Just Software
Tax software can generate a Form 1120-S. What it cannot do is tell you whether your S-Corp election still makes sense given last year's revenue, whether your reasonable compensation is defensible if audited, or whether a NJ BAIT election could have saved a similar business roughly $8,000 in combined state taxes (a representative scenario — actual results vary). Those are judgment calls — and they require a licensed CPA who understands both the federal rules and the NJ-specific layer on top of them. For a full side-by-side of the two routes, see the TurboTax vs CPA comparison for NJ businesses.
The late filing penalty for S-Corp and partnership returns is $255 per shareholder or partner per month for tax year 2025 returns, indexed annually (per the IRS Form 1120-S instructions). An S-Corp with three shareholders that files six months late owes $4,590 in penalties before paying a dollar of tax. ProAxis tracks deadlines, files extensions when needed, and helps clients avoid preventable penalties.
Bergen County has a high concentration of S-Corps and LLCs — attorneys, healthcare practices, contractors, consultants, real estate investors. These businesses generate K-1 income that flows into personal returns with significant complexity. ProAxis handles this intersection every day for clients across Bergen, Passaic, Essex, and Hudson counties.
2026 NJ Business Tax Deadlines at a Glance
Already Past the Deadline?
If your business return is late, filing now is still far better than continuing to wait. Every month of delay adds another $255 per shareholder/partner (tax year 2025 returns) to your penalty balance. First-time penalty abatement is available from the IRS for businesses with a clean compliance history — a CPA can request it once the return is filed.
Talk to a ProAxis CPA about your late return →Who ProAxis Serves
Professional Services
Attorneys, consultants, CPAs, engineers, architects — often structured as S-Corps or LLCs.
Healthcare Practices
Physician groups, dental practices, therapy practices with complex compensation structures.
Real Estate Investors
LLCs holding rental properties, flippers, short-term rental operators with multi-property portfolios.
Contractors & Trades
Construction, electrical, plumbing, HVAC — businesses with heavy equipment and vehicle deductions.
Restaurants & Retail
High-volume cash and card businesses needing accurate POS reconciliation and inventory accounting.
E-Commerce & Tech
Online sellers and SaaS businesses with multi-state nexus, digital product tax exposure, and inventory.
Related ProAxis Services
Frequently Asked Questions
What is the tax filing deadline for an S-Corp or partnership in NJ?
S-Corporation returns (Form 1120-S) and partnership returns (Form 1065) are due March 15 — one month before the individual tax deadline. When the 15th falls on a weekend or holiday, the deadline shifts to the next business day (March 16 in 2026). An extension to September 15 is available. Missing the March deadline triggers a $255 per shareholder/partner per month penalty (tax year 2025 returns; indexed annually), so timely filing or extension is critical.
Does my LLC need to file a separate tax return?
It depends on your LLC structure. A single-member LLC is typically reported on Schedule C of your personal 1040 — no separate return. A multi-member LLC files Form 1065 (partnership return) and issues K-1s to each member. An LLC that has elected S-Corp status files Form 1120-S. ProAxis determines the correct filing obligation during the onboarding process.
What is a K-1 and why does it matter for business owners?
A Schedule K-1 is the document that flows your share of business income, deductions, and credits to your personal 1040. It comes from a partnership or S-Corp return. K-1s must be issued by the business before partners or shareholders can complete their individual returns. That is why business returns are due March 15. ProAxis coordinates business and individual filings so nothing falls through the gap.
Can ProAxis handle both my business return and my personal 1040?
Yes — and this is actually the most efficient approach. When the same CPA prepares your business return (1120-S or 1065) and your personal 1040, we can coordinate timing. We can ensure your K-1 flows correctly. We can also identify deductions that span both returns. ProAxis handles both for the majority of our business owner clients.
What NJ-specific filings does my business need beyond the federal return?
New Jersey has its own business tax filings. S-Corps file NJ-CBT-100S. Partnerships file NJ-1065. C-Corps file NJ-CBT-100. Many pass-through entities also need to consider the NJ BAIT election (Pass-Through Business Alternative Income Tax). It is a significant planning opportunity that can reduce the combined state tax burden for owners. ProAxis handles all NJ business filings.
Ready to work with a Bergen County CPA who handles your business return and personal 1040 in one coordinated engagement? Schedule a free consultation or call (201) 800-2330.