Business Tax Return Preparation for C Corps, S Corps, partnerships and LLCs
A filed return for business is more than what it sounds. It shows whether your business is actually being represented correctly, and whether you’re set up right going into next year too.
We prepare business tax returns for partnerships (Form 1065), C corps (1120) and S corps (Form 1120-S) with exactly that in mind, along with the ongoing work that keeps you compliant and correctly positioned year over year.
Who
This is for
Small business owners & Startups
You work across state lines or have a straightforward federal return. We prepare it accurately and on time.
Partnerships & Multi-Member LLCs
Your business has multiple owners and income that passes through to each of them. We prepare Form 1065 and your K-1s accurately and on time.
S Corps & Growing Businesses
You’ve elected S-corp status and need clean books, reasonable salary guidance, and a 1120-S that holds up. We prepare it accurately and on time.
C Corps
Your business is taxed as a corporation, separate from you as the owner. We prepare and file your Form 1120 accurately and on time, and handle extensions, estimated tax payments and state filings along the way.
What Add-wise Tax handles
1065 partnership return preparation
1120-S S-corp return preparation
Corporate tax return preparation for growing businesses
Coordination with your bookkeeping so filing season isn't a scramble
Why trust Add-Wise Tax with your return
We prepare your return from your actual books, not a box of receipts in April. The result is a filing that reflects your business as it truly operates.
Professional expertise
We know the forms and the rules that apply to your entity type.
Personalized approach
Your return is built around your business, not a generic template.
Clear communication
We explain what we file and why in plain English.
Modern advisory support
We stay available after filing for questions and next year's planning.
Client Testimonials
Hear from people who stopped dreading tax season.
Your expertise and efficiency in handling Texas consultation filings and IRS reporting have been invaluable. We greatly appreciate your prompt communication and attention to detail, ensuring all requirements are met seamlessly. Thank you for your support!
I've worked with Add-wise Tax for many years and they have consistently provided expert level guidance on all tax and business related matters. As my company has scaled from a little more than 10 people to more than 100 a few years later, Sid Jain and Add-wise Tax have been critical in that growth. I would highly recommend Add-wise Tax.
File your business return without the guesswork
Book a consultation and get a clear plan for your business tax return.
Process
How We Work
Onboarding call
We start by understanding your specific tax and accounting situation, and what problems you are currently facing.
We prepare
Based on what we learn, we put together a proposal scoped to what you actually need.
Onboarding & Document Collection
We gather what's needed securely, and walk you through our work process for the project or recurring monthly support.
Ongoing Support
We're your one-stop support for evolving business needs with our expertise in CFO and tax advisory services.
FAQs
Answers to the questions we hear most from clients.
What’s the difference between a 1065 and an 1120-S filing?
Form 1065 is filed by partnerships and multi-member LLCs taxed as partnerships, while Form 1120-S is filed by businesses that have elected S-corporation status. Each has different rules around how income passes through to owners.
What is the federal tax rate for a C Corporation?
The federal corporate rate is a flat 21%. State taxes are separate and vary by state.
My C Corp is owned by a non-US person. Is there extra paperwork?
Yes. Foreign-owned US corporations often have to file Form 5472 along with the return, and the penalty for missing it is steep ($25,000 per form). We prepare these filings regularly for cross-border owners.
Do you prepare returns for small businesses, or only larger companies?
We work primarily with small and growing businesses, including LLCs, partnerships, and S-corps.
How far in advance should I start preparing my business tax return?
Starting well before the filing deadline gives us time to review your books, catch any issues, and look for planning opportunities rather than just filing what’s already there.
Do you only prepare returns, or do you also advise on tax strategy?
Both. We review your return for planning opportunities and can advise on decisions that affect future filings, not just prepare the current year’s return.
What is double taxation, and does it apply to me?
The corporation pays tax on its profits. If it then pays dividends, the shareholders pay tax on that income personally too. That’s the “double” part. Whether it affects you depends on how you take money out of the business. We can walk you through the options.
What records do you need from me to prepare my business return?
Generally your bookkeeping records, prior year returns if applicable, and any relevant documentation for major transactions during the year. If your books aren’t fully current, we can help with that first.
How do I get started?
Book a consultation. We will talk through your situation and determine the best path forward. There isno pressure and no jargon.
Your return deserves real attention
Book a consultation with Add-wise Tax and get the clarity you need to file.
Book a free consultation