U.S. subsidiary setup checklist for international companies, covering accounting, payroll, tax compliance, intercompany transactions, reporting, and more.
Forming a U.S. subsidiary is only the beginning.
To operate properly, international companies also need the right banking, accounting, payroll, tax, reporting, and intercompany processes in place.
Use this checklist to make sure the core pieces are covered.
1. Set up the U.S. business infrastructure
Once the entity is formed, it needs the basic infrastructure required to actually operate in the U.S. Some requirements apply from day one, while others depend on where and how the company does business.
Your subsidiary will typically need:
An Employer Identification Number (EIN)
A U.S. business bank account
A registered agent
Corporate documents and initial approvals
Required state and local registrations
Applicable business licenses or permits
Keep in mind that forming the company in one state does not necessarily cover every state where you later hire employees or conduct business.
2. Establish a proper accounting system
Your U.S. subsidiary should maintain its own reliable financial records from the start. A clear accounting structure makes tax filings, management reporting, and coordination with headquarters significantly easier as the business grows.
That should include:
A dedicated accounting system
A clear chart of accounts
Accounts payable and receivable processes
Regular bank and balance-sheet reconciliations
A consistent monthly close
Supporting documentation for transactions
For international groups, the U.S. accounts should also connect cleanly with headquarters reporting, including any differences in reporting structure, currency, or accounting standards.
3. Define your intercompany process
International groups regularly move money, services, and expenses between the parent company and U.S. subsidiary. Those transactions need a consistent process rather than being sorted out informally at year-end.
Establish clear rules for:
Which entity pays which expenses
Shared cost allocations
Expense reimbursements
Intercompany services and billing
Funding through equity or intercompany loans
Foreign-currency transactions
Intercompany reconciliations
Supporting documentation
Related-party transactions may also create U.S. transfer-pricing and reporting requirements.
One important example: Form 5472. Certain 25%-foreign-owned U.S. corporations and foreign-owned U.S. disregarded entities must report qualifying transactions with related parties. The IRS penalty for failing to file a required Form 5472 starts at $25,000.
4. Get hiring and payroll right
Hiring in the U.S. introduces more than a recurring payroll run. Companies need to determine how workers should be classified and make sure the appropriate federal and state payroll processes are in place.
Before hiring, review:
Employee vs. independent contractor classification
Federal and state payroll registrations
Employee tax withholding
Payroll tax deposits and filings
State unemployment insurance
Workers’ compensation
Benefits administration
Employee onboarding
Hiring in a new state can create additional registration, payroll, tax, and compliance requirements.
5. Identify your U.S. tax obligations
U.S. tax obligations depend on the company’s structure, activities, employees, customers, and geographic footprint. They can also expand over time as the subsidiary grows.
Depending on the business, obligations may include:
Federal corporate income tax
State income or franchise taxes
Sales tax
Payroll taxes
Related-party reporting
Annual state filings
Withholding and reporting on certain payments to foreign parties
These requirements can change as the subsidiary adds employees, enters new states, holds inventory, increases sales, or changes how it operates.
6. Build a compliance calendar
Knowing what needs to be filed is only useful if the company also knows when it is due and who owns it. A central compliance calendar can help prevent deadlines from being missed across different providers, teams, and jurisdictions.
Track:
Filing deadlines
Tax payment deadlines
State renewals
Payroll filings
Responsible team members or advisors
Information needed from headquarters
This can prevent compliance gaps and make year-end much easier.
7. Create a monthly reporting process
Headquarters should not have to wait until year-end to understand how the U.S. subsidiary is performing. Regular reporting gives both local and international management a clearer view of performance, cash, and financial issues as they arise.
A typical reporting package may include:
Profit and loss
Balance sheet
Cash position
Budget vs. actual results
Intercompany balances
Commentary on significant changes
The reporting process should evolve as the U.S. business grows.
8. Decide who owns each responsibility
Even when a company uses several internal teams and outside providers, every part of the U.S. finance function should have a clear owner. Gaps often appear when one party assumes someone else is handling a task.
Define responsibility for:
Bookkeeping and monthly close
Accounts payable and receivable
Payroll
Cash management
Tax compliance
Intercompany accounting
Financial reporting
Budgeting and forecasting
These responsibilities can sit with headquarters, the U.S. team, external advisors, or a combination of all three. What matters is that nothing falls through the gaps.
The bottom line
A U.S. subsidiary does not necessarily need a large internal finance team. It does need the systems and processes of a properly functioning U.S. business.
Getting those foundations in place early makes it much easier to scale as the company adds employees, customers, states, and reporting requirements.
Orbiss helps international companies manage the accounting, tax, payroll, reporting, and financial infrastructure behind their U.S. operations.