ZentaxPro
Small Business Returns

Entity tax returns for LLCs, S Corps & C Corps

1120, 1120S, 1065, and K-1s prepared by professionals who specialize in entity-level taxation — not the same workflow as a freelancer's 1040.

Small business returns ≠ self-employed returns

If you're a sole proprietor or 1099 contractor reporting income on Schedule C of your personal 1040, that's a self-employed return — handled on our Tax Preparation page.

If your business is a separate legal entity — an LLC, S Corp, C Corp, or partnership — it files its own federal return (1120, 1120S, or 1065) and issues K-1s to owners. That's what this page is for. The rules, deadlines (March 15 vs April 15), basis tracking, and reasonable-compensation requirements are completely different.

Forms we file

Every common entity return

From a single-member LLC electing S Corp status to a multi-state C Corp with shareholders in different states, we handle the return at the entity level and the K-1s for the owners.

C Corporation (Form 1120)

Federal and state C Corp returns, including depreciation schedules, NOL carryforwards, and book-to-tax reconciliations on Schedule M-1/M-3.

S Corporation (Form 1120S)

S Corp returns with reasonable compensation analysis, basis tracking, AAA reconciliation, and K-1s issued to each shareholder.

Partnership / Multi-Member LLC (Form 1065)

Partnership returns with capital account maintenance, special allocations, and K-1s for every partner.

Schedule K-1 Preparation

Accurate K-1s for shareholders, partners, and beneficiaries — issued on time so individuals can file their 1040s without delays.

LLC Tax Elections

Help choosing — and properly filing — between disregarded entity, partnership, S Corp, or C Corp tax treatment for your LLC.

State & Multi-State Filings

Franchise tax, gross receipts tax, and state income tax returns wherever your entity does business.

Quick comparison

Which return do you need?

Self-employed / 1099

Schedule C on your 1040

  • Sole proprietors, freelancers, single-member LLCs taxed as disregarded
  • Filed with your personal return — April 15
  • No separate entity return
Go to Tax Prep
Small business entity

1120, 1120S, or 1065 + K-1s

  • LLCs (multi-member), S Corps, C Corps, partnerships
  • Separate entity return — March 15 for S Corps & partnerships
  • K-1s issued to each owner for their personal return
You're on the right page

Get your entity return done right

Tell us your entity type, states, and how many owners — we'll quote it within one business day.

Request a Small Business Quote