Tax Registration for New Businesses: Full Guide

TL;DR: New businesses must register for corporate income tax, VAT/GST (once turnover thresholds are reached), and payroll taxes (when hiring employees). Each country has different registration bodies, thresholds, and deadlines — missing them triggers penalties.

What You Need to Know

Registering your new business for tax is not optional — it is a legal requirement, and the deadlines are strict. Many founders understand that they need to file tax returns, but fewer understand that they must register for each type of tax before they can file, and that these registrations often have their own timelines and triggers.

The three main tax registration categories for a new business are:

1. Corporate income tax — registering your company as a taxable entity
2. VAT/GST (value added tax / goods and services tax) — registering to collect and remit consumption tax on sales
3. Payroll tax — registering as an employer to withhold income tax and social security contributions

Each has different triggers (incorporation date, revenue threshold, date of first employee) and different registration processes. Missing any of them results in backdated liability plus penalties and interest.

MmowW Scrib🐮 can help you prepare the document packages for these registrations. For specific tax advice, always consult a qualified accountant or tax advisor in your jurisdiction.

How It Works: A Practical Overview

Corporate Income Tax Registration

In most countries, company registration and corporate tax registration are linked — the company registry automatically notifies the tax authority, which then issues a tax reference number. However, the company must typically complete a separate step: notifying the tax authority of the start of trading, accounting period, and other details.

UK: HMRC automatically receives notification from Companies House. You must register for corporation tax within 3 months of starting to do business (gov.uk/register-for-corporation-tax). HMRC issues a Unique Taxpayer Reference (UTR) by post.

France: Registration through Guichet-Entreprises automatically notifies the tax authorities. The company receives a SIRET number used for all tax purposes. The first liasse fiscale (annual tax return) is due the year after the accounting period end.

Australia: After ASIC registration, companies must apply for an Australian Business Number (ABN) and Tax File Number (TFN) through the ATO (abr.gov.au). The ABN is used in all business dealings; the TFN is the company's income tax identifier.

USA: A new entity must obtain an Employer Identification Number (EIN) from the IRS (irs.gov/businesses/small-businesses-self-employed/apply-for-an-employer-identification-number-ein-online). The EIN serves as the company's federal tax ID and is required to open a bank account.

VAT/GST Registration

VAT/GST is a consumption tax charged on most business sales and collected on behalf of the government. You must register once your taxable turnover exceeds the registration threshold — and in some cases, you can register voluntarily before that.

Registration thresholds (2024):

• UK: GBP 90,000 trailing 12-month turnover (gov.uk/register-for-vat)
• France: EUR 91,900 (goods) / EUR 36,800 (services) — some variations by activity
• Sweden: SEK 80,000
• Australia: AUD 75,000 (or AUD 150,000 for non-profit organisations)
• New Zealand: NZD 60,000
• Canada: CAD 30,000 (Small Supplier threshold; GST/HST — canada.ca/en/revenue-agency)
• USA: No federal VAT/GST; sales tax varies by state (most require registration when nexus is established — either physical presence or economic nexus, commonly USD 100,000 in sales or 200 transactions in a state)

Voluntary registration: Most jurisdictions allow voluntary VAT/GST registration below the threshold. This is often advisable for B2B businesses because it allows you to recover VAT paid on purchases (input tax) from the outset, improving cash flow.

Once registered, you must:

• Charge VAT/GST on eligible sales at the applicable rate
• Issue VAT/GST-compliant invoices
• File periodic returns (monthly, quarterly, or annually depending on jurisdiction and turnover)
• Remit the net VAT/GST collected (output tax minus input tax) by the due date

Payroll Tax Registration

Once you hire your first employee, you must register as an employer with the tax authority. This triggers:

• Obligation to withhold income tax from wages (PAYE in UK, Pay As You Go in Australia, federal/state withholding in USA)
• Obligation to pay and withhold social security/national insurance contributions
• Payroll reporting obligations
• Mandatory pension enrollment obligations (UK, Australia, NZ)

Registration must typically occur before the first payroll run.

Other Tax Registrations to Consider

• Industry-specific taxes: Excise duties (alcohol, tobacco, fuel), digital services taxes, financial transaction taxes
• Local/municipal taxes: Business rates (UK), taxe professionnelle/CFE (France), business property tax (various)
• Carbon tax/emissions trading: Canada (federal), EU ETS (France, Sweden)

Country-by-Country Comparison

Common Mistakes to Avoid

1. Not registering for VAT/GST until you exceed the threshold. You should register when you expect to exceed the threshold within the next 30 days (UK rule) — not after you have already exceeded it. Registering late means you should have been charging VAT on earlier sales, and those customers may not be willing to pay retroactive VAT — leaving you personally liable for it.
2. Choosing the wrong accounting period end date. In most countries, you can choose when your company's accounting year ends. Choosing a date that aligns with your business cycle (e.g., avoiding peak season for year-end) makes financial management easier. In the UK, HMRC assigns an accounting period end date, but you can change it within certain rules.
3. Missing the employer registration deadline. In most countries, you must register as an employer before running the first payroll — not after. Running unregistered payroll creates backdated tax liability for the employer.
4. Not collecting VAT/GST on all taxable supplies. In countries with complex VAT/GST rules, it can be easy to incorrectly classify a supply as exempt or zero-rated when it is actually standard-rated. Under-charging VAT means the business absorbs the shortfall. Over-charging means customers are wrongly charged. Get specific advice on the VAT treatment of your products and services.
5. Forgetting US state sales tax obligations. Post-South Dakota v. Wayfair (2018), US businesses with "economic nexus" in a state (typically USD 100,000 in sales or 200 transactions) must register for and collect that state's sales tax, even without a physical presence. For businesses selling to US customers nationally, this can mean registrations in 30+ states. Sales tax automation software (TaxJar, Avalara) is strongly advisable.

Next Steps: Get Started Today

MmowW Scrib🐮 helps prepare the documentation required for tax registrations and accounting period elections.

• Filing Deadlines: Track all your tax registration deadlines and filing due dates → Filing Deadlines Tool
• Cost Calculator: Estimate your annual tax compliance costs → Cost Calculator Tool

MmowW Scrib🐮 is a document preparation service, not a law firm. We do not provide legal advice. For tax advice specific to your business, always consult a qualified accountant or tax attorney in your jurisdiction.

Frequently Asked Questions

Q: Do I need to register for every type of tax immediately when I incorporate?

A: Not all at once. Corporate tax registration is typically automatic or required within a few months of incorporation. VAT/GST registration is required when you exceed the relevant threshold (or from the start if you register voluntarily). Payroll registration is required before your first employee starts. Industry-specific taxes may have their own registration triggers. Track each type of registration separately with its own deadline.

Q: What is a tax year and can I choose mine?

A: A tax year (or accounting period) is the 12-month period for which your business calculates and files its tax return. In some countries (USA, Australia), the government specifies the standard tax year (April–March or July–June). In others (UK, France), you can choose your accounting period end date within certain rules. Aligning your accounting period with your business cycle can simplify year-end and reduce the cost of accounting services.

Q: What happens if I register late for VAT/GST?

A: Late registration triggers backdated liability. If you should have registered at AUD 75,000 turnover but only registered at AUD 150,000, the ATO can require you to pay GST on all sales between the two points — even if you did not collect it from customers. This can be very expensive. In most jurisdictions, penalties are also applied on top of the backdated tax. Early registration (including voluntary registration before the threshold) is always safer.

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