1120 C-Corp · 1120-S S-Corp · 1065 Partnership · White-label · Reviewer-ready

Outsource business entity tax return preparation — C-Corps, S-Corps, and partnerships handled by certified offshore accountants.

Business returns are more complex than individual returns and more time-intensive for your CPAs to prepare from scratch. We handle the preparation work for 1120, 1120-S, and 1065 returns — your CPAs review, apply judgment, and sign. That's the division of labour that lets your firm serve more business clients without adding local headcount.

Outsource business returns Tax season capacity →

Entity types covered

The three business entity return types that cover the majority of small business CPA firm clients.

1120

C Corporation

C-Corp tax return preparation

Full Form 1120 preparation for C corporations. Schedule M-1 and M-3 reconciliation, depreciation schedules, net operating loss tracking, and estimated tax payment calculations.

Schedule M-1/M-3 book-to-tax reconciliation

Depreciation and amortisation schedules

Net operating loss carryforward tracking

Dividends received deduction

Estimated tax payment schedule

1120-S

S Corporation

S-Corp tax return preparation

Full Form 1120-S preparation with Schedule K-1 for each shareholder. Built-in gains tax calculations, AAA and OAA tracking, and reasonable compensation analysis support.

Schedule K-1 for all shareholders

AAA and OAA account tracking

Built-in gains tax calculations

Shareholder basis schedule maintenance

Reasonable compensation documentation support

1065

Partnership / LLC

Partnership and LLC tax return preparation

Full Form 1065 preparation for general and limited partnerships and multi-member LLCs. Schedule K-1 for all partners, capital account maintenance, and basis calculations.

Schedule K-1 for all partners/members

Partner capital account maintenance

Outside basis schedule preparation

Section 754 election support

Guaranteed payment tracking

Quality process

Business returns require more preparation time and more precise judgment. Our process reflects that.

A 1065 with 8 partners, carried interest, and a Section 754 election in effect is not prepared the same way as a simple S-corp return. Our accountants understand entity-specific complexity — and flag items requiring your professional judgment clearly, so your review is efficient rather than exhaustive.

Prior year return reviewed before work begins

Every business return engagement starts with a review of the prior year return. Carryforwards identified, elections confirmed, and any changes in the client’s situation noted before preparation starts.

K-1 allocation review before issuance

For all pass-through entities, K-1 allocations are verified against the operating agreement or shareholder agreement before the K-1s are prepared. Allocation errors are among the most common and most consequential errors in business return preparation.

Book-to-tax reconciliation completed as standard

Schedule M-1 or M-3 reconciliation prepared for every corporate return. Temporary and permanent differences identified and documented. This step is where most preparation errors are caught.

Judgment items flagged — not silently resolved

Any item requiring CPA-level judgment — treatment of a related-party transaction, an ambiguous deduction, an entity classification question — is flagged in a preparer note for your attention. We prepare. You judge. Nothing is resolved silently.

Business returns prepared correctly. Ready for your review.

Tell us your entity mix — 1120, 1120-S, 1065 — and the software you use. We'll confirm coverage and tell you what the first batch looks like.

Book a discovery call

Or email us directly at accounting@nimblechapps.finance — no forms, no bots.

Services

QBO & Xero bookkeeping — certified, accurate, on time

For CPA Firms

How a CPA firm adds a certified offshore accountant in 2 weeks

Industries

Real estate accounting — trust accounts, rent rolls, CAM reconciliations

Resources

The true cost of a local bookkeeper vs a certified offshore accountant

Company

Build your accounting career with a structured path to EA and CMA

Outsource business entity tax return preparation — C-Corps, S-Corps, and partnerships handled by certified offshore accountants.

The three business entity return types that cover the majority of small business CPA firm clients.

Business returns require more preparation time and more precise judgment. Our process reflects that.

Business returns prepared correctly. Ready for your review.