Tax Services
Corporate Tax
Precision filing and planning for C-corporations. We prepare corporate income tax returns that satisfy compliance requirements and support your long-term tax efficiency.
Corporate Returns That Go Beyond Filing
A C-corporation return is more than a compliance obligation — it is a statement of your organization's financial activity that carries real consequences for cash flow, planning, and future decisions. C&M LLP prepares federal and state corporate income tax returns (Form 1120) with accuracy, thoroughness, and a constant eye toward your entity's overall tax position. Because the C-corporation is a separate taxpaying entity, the stakes of getting the return right — and the opportunity in planning it well — are significant.
Every engagement begins with a careful reconciliation of book income to taxable income. We identify and document the permanent and temporary differences that drive your provision, evaluate net operating loss utilization and limitations, and surface planning opportunities — depreciation and §179 elections, accounting method changes, R&D and other credits, and charitable contribution timing — so nothing is left on the table because no one thought to look.
For corporations operating across state lines, we handle apportionment and nexus analysis carefully, and we prepare consolidated returns for affiliated groups where applicable. We coordinate with your CFO, controller, and auditors to ensure the return ties to the financial statements, and we address any unusual item before filing rather than after.
What You Receive
Completed Form 1120 Package
Fully prepared federal and applicable state corporate returns, reviewed for accuracy, with all supporting schedules, elections, and the book-to-tax reconciliation. Delivered with a clear summary of the key figures and notable items.
Tax Provision Support
Documentation of current and deferred tax positions, permanent and temporary differences, and effective tax rate drivers — coordinated with your financial statements and ready for auditor review.
Year-End Planning Memo
A written summary of planning observations from the return — credit and NOL utilization, elective opportunities, estimated payment adjustments, and items to address before the next year closes.
Which Corporations Do We Serve?
We work with C-corporations across a range of industries and sizes — from closely-held operating companies to holding-company structures and multi-state affiliated groups. We are particularly well-suited to corporations whose returns involve genuine complexity: operations in multiple states, significant book-tax differences, net operating loss carryforwards, R&D or other credits, or a tax provision that must reconcile cleanly to audited financial statements. If your business is taxed as a pass-through entity, see our Flow-Through Tax service.
Typical Clients
- Closely-held C-corporations
- Multi-state and multi-entity groups
- Holding companies and blockers
- Corporations requiring a tax provision