Threshold monitoring: Regularly track your taxable turnover to ensure timely registration when you exceed £90,000 in a 12-month period.

Voluntary registration: Businesses below the threshold can choose to register to reclaim input VAT, which can benefit startups with high initial costs.

Registration methods: You can register online through HMRC's website, by post, or with help from an accountant to ensure accuracy.

VAT schemes: Choose between Standard VAT Accounting, Flat Rate Scheme, or Cash Accounting based on your business model to optimize cash flow.

Making Tax Digital (MTD): Since April 2022, most VAT-registered businesses must use MTD-compatible software for VAT returns.

VAT rates: Understand the different rates: Standard (20%), Reduced (5%), and Zero-rated, and which apply to your goods or services.

Input and output VAT: Record all VAT on sales (output VAT) and purchases (input VAT) to calculate the net amount due to HMRC.

Penalties for late registration: Failing to register on time can result in penalties based on the VAT due from the date you should have registered.

Exemption criteria: Some businesses are exempt from VAT, such as those with turnover below the threshold and not selling VATable goods.

International aspects: If you trade with EU or non-EU countries, additional rules apply for VAT on imports and exports.