Skip to content
KG
KG Tax & Consulting
Service

Corporation & Partnership Tax Returns

We file Form 1120 for C-corps, 1120-S for S-corps, and 1065 for partnerships, plus every K-1 your owners need for their personal returns.

Katie Gorles
Written by
Katie Gorles
Updated April 22, 2026

S-corporation filings (Form 1120-S)

The most common entity in our practice. We prepare the 1120-S, calculate reasonable owner compensation, track shareholder basis, and produce the K-1s that flow to each owner's personal return.

Partnership filings (Form 1065)

Multi-member LLCs default to partnership taxation unless they've elected otherwise. We prepare the 1065 and all partner K-1s, handle special allocations, and track partner capital accounts.

C-corporation filings (Form 1120)

C-corps pay their own federal tax at 21%, plus state corporate tax where applicable. Less common in small business, but relevant for specific situations including venture-backed startups and businesses planning to retain significant earnings.

Have a specific situation?
Call the office and a human answers.

Multi-state filings

Any entity with a nexus in more than one state files composite returns, state-specific returns, or both. We coordinate the state filings with the federal and handle apportionment.

Common questions

When is the S-corp or partnership return due?
March 15 for calendar-year filers. Extensions are available with Form 7004 to September 15.
What's a reasonable salary for an S-corp owner?
The IRS expects S-corp owner-employees to be paid what a comparable employee would earn for the same work. Paying too little is the most common S-corp audit trigger.
Can you take over from another accountant mid-year?
Yes. We do onboarding transitions regularly. We need a copy of the prior year return and current-year books; the rest we rebuild from source documents.

Related

A Conversation, Not A Form

Ready to get started?

Schedule a free consultation today and see how KG Tax & Consulting can help you.