Sales Tax, VAT & GST Compliance in the United States
We keep you compliant as you cross state lines and borders, before it becomes a problem. Delivered to US GAAP for US businesses, priced in USD.
There is no US GST or federal sales tax — which is exactly why so many businesses get this wrong. Sales tax is set by roughly 13,000 state and local jurisdictions, and economic nexus means you can owe in a state you have never physically entered.
Since the Wayfair decision, most states assert economic nexus at around $100,000 of sales or 200 transactions into that state. Each state has its own registration, rate, filing frequency and due date, so a single national return does not exist.
The deadlines we track against your ledger.
| Obligation | Frequency | Due | Authority |
|---|---|---|---|
| State sales-tax returnsBusinesses with economic or physical nexus in a state | Monthly | Commonly the 20th of the following month — set by each state and by filing frequency | State DOR |
| Estimated tax instalments | Quarterly | 15 April, 15 June, 15 September, 15 January | IRS |
| Form 1120 (C-corporation return)C-corporations on a calendar year | Annual | 15 April | 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.
Sales Tax · VAT · GST deliverables
- US economic-nexus monitoring & multi-state filing
- UK / EU VAT return preparation
- Australian BAS & GST lodgement prep
- UAE VAT tracking & input-tax documentation
- Threshold alerts before you trigger liability
QuickBooks Online
Native QuickBooks tax tables are not sufficient at multi-state scale — we connect Avalara or TaxJar so rates and nexus thresholds update without manual maintenance.
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.
Sales Tax · VAT · GST in United States
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Sales Tax, VAT & GST Compliance 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.