Tax Preparation & Filing in the United States
We take your tax from a deadline you dread to a process that's simply handled. Delivered to US GAAP for US businesses, priced in USD.
US business tax is shaped by the entity before anything else. An S-corporation and a C-corporation with identical books have different deadlines, different forms and a different answer on how the owner should be paid. We prepare the return and the workpapers behind it, and we are explicit about who signs and files.
The IRS wants Form 1120-S or Form 1065 by 15 March for S-corporations and partnerships, and Form 1120 by 15 April for calendar-year C-corporations, with estimated instalments through the year. State returns run on their own schedules on top. We prepare to a review-ready standard and your CPA or enrolled agent reviews, signs and files.
The deadlines we track against your ledger.
| Obligation | Frequency | Due | Authority |
|---|---|---|---|
| Form 1120-S / Form 1065 (S-corp and partnership returns)S-corporations and partnerships on a calendar year | Annual | 15 March | IRS |
| Form 1120 (C-corporation return)C-corporations on a calendar year | Annual | 15 April | IRS |
| Estimated tax instalments | Quarterly | 15 April, 15 June, 15 September, 15 January | IRS |
| 1099-NEC and W-2 to recipients and the IRSAny business paying contractors or employees | Annual | 31 January | IRS |
Last reviewed against the source . These are the standard dates. Extensions through a registered agent, a non-calendar year end, and volume-based filing frequencies all shift them — confirm your own dates with IRS. This is general information, not tax advice.
Tax Preparation deliverables
- Corporate return preparation (1120 / CT600 / T2 / etc.)
- Founder & director personal returns
- Local-GAAP annual financial statements
- Workpaper preparation & schedules
- Coordination with your filing agent or CPA
QuickBooks Online
Workpapers are built from the ledger itself rather than from an export, so every number on the return traces back to a reconciled account in QuickBooks Online or NetSuite and can be defended line by line.
A worked example, in your currency.
A Delaware-incorporated SaaS company, 4,200 transactions a month, selling into 14 states.
- In-house bookkeeper (fully loaded, per month)
- $5,800
- Salt bookkeeping + controller layer
- $1,850
- Monthly saving
- $3,950
Fully loaded cost assumes salary plus payroll taxes, benefits, software seats and management time — not base salary alone.
The framework your United States accounts are held to.
We prepare to US GAAP, as codified by the FASB. These are the bodies that set that framework and the authorities you file with — linked so you can verify the standard rather than take our word for it.
- Professional bodyAICPAAmerican Institute of Certified Public AccountantsSets US professional and ethical standards for CPAs.
- Standards setterFASBFinancial Accounting Standards BoardIssues the US GAAP codification we prepare accounts to.
- RegulatorIRSInternal Revenue ServiceFederal tax authority — filings, deadlines and guidance.
Listed for reference. Salt Accounting Group is not stating membership, registration or affiliation with any of these organisations. Where a filing must be lodged by a registered local agent, it is — your agent keeps the lodgement and the professional sign-off.
Tax Preparation in United States
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Tax Preparation & Filing for United States, simply handled.
Tell us where you trade and what shape the books are in. You get scope, price and a start date in writing within one business day — no obligation.