Business Tax Preparation Services
Accurate, on-time business tax returns for LLCs, S-Corps, corporations, and partnerships — backed by ASU's $0 error guarantee.
Business Tax Returns Prepared by Louisiana's Most Experienced Small Business Accounting Firm
Business tax preparation is not a commodity. An accountant who understands your industry, your entity structure, and the nuances of Louisiana and California tax law can find legitimate deductions and credits that a software-driven workflow will miss — and can structure your business properly to minimize your tax liability legally.
ASU prepares business tax returns for all entity types: sole proprietors (Schedule C), partnerships (Form 1065), S-Corporations (Form 1120-S), and C-Corporations (Form 1120). We file both federal returns and all applicable state returns, including Louisiana Department of Revenue filings and California Franchise Tax Board returns for our San Diego clients.
Every return ASU prepares is backed by our error guarantee: if we make a mistake and you receive a penalty or interest charge as a result, we pay it. No fine print. We've maintained this guarantee for 25+ years because we don't file returns we aren't confident in.
Call (504) 838-7140 to schedule a free consultation. We'll review your prior-year returns, assess your current situation, and tell you exactly what we can do for you.
Returns We Prepare
How It Works
Free Review
We review your prior-year returns and current books to assess your situation and identify any missed deductions, structural opportunities, or entity issues that may be costing you money.
Return Preparation
We prepare your complete return, document all positions taken, and review it with you before filing. Extensions are handled automatically when needed.
Filing & Year-Round Support
We file electronically, retain copies for your records, and remain available year-round for questions — not just at tax time.
Frequently Asked Questions
What entity types does ASU prepare business tax returns for?
ASU prepares business tax returns for all entity types: sole proprietors (Schedule C), single-member LLCs, multi-member LLCs, partnerships (Form 1065), S-Corporations (Form 1120-S), and C-Corporations (Form 1120). We file both federal returns and all applicable state returns.
Does ASU prepare both federal and state business tax returns?
Yes. We prepare federal returns plus Louisiana Department of Revenue returns for Louisiana businesses, and California Franchise Tax Board returns for our San Diego-area clients. We handle all applicable state filings in a single engagement.
What is ASU's error guarantee for business tax returns?
If we make an error on a return we prepared and you receive a penalty or interest charge as a result, ASU pays it. No fine print, no contracts required. We've maintained this guarantee for 25+ years because we don't file returns we aren't confident in.
Can ASU prepare my business return if my books are messy or incomplete?
Yes. We can handle catch-up bookkeeping first, clean up your financial records, and then prepare your tax return from an accurate foundation. We won't file a return based on disorganized books and call it done.
How far in advance should I contact ASU before my tax deadline?
Ideally 2–3 months before your deadline. This gives us time to review your situation, identify planning opportunities, and prepare the return properly. We can handle rush work when needed, but prefer adequate time to do it right.
Does ASU prepare quarterly estimated tax payments?
Yes. We calculate quarterly estimated payments to keep you in compliance and avoid underpayment penalties. This is part of our ongoing tax service, not an add-on.
Will ASU review prior-year returns to see if I've been overpaying?
Yes. Prior-year return review is part of our free initial consultation. We frequently find missed deductions, incorrect entity structures, and other issues that have been costing clients money for years.
Does ASU represent me if the IRS questions my business return?
Yes. Our IRS Audit Representation service covers returns we've prepared. If the IRS contacts you about a return ASU filed, we handle the response and any resulting proceedings directly.