PAYE, WHT and VAT show up on payslips, invoices and receipts constantly, and most people have simply learned to accept the deductions without fully understanding what each one actually is or who it is meant to affect. Here is the plain version.
PAYE: Pay As You Earn
PAYE is personal income tax, deducted directly from an employee's salary by their employer before the salary is even paid out. If you are formally employed, this is almost certainly the tax line you see on your payslip every month. Your employer calculates it based on your income and remits it to the relevant tax authority on your behalf, so as an employee, you generally do not file or pay this yourself, it has already been handled before the money reaches you.
WHT: Withholding Tax
Withholding tax works differently. It is not a separate tax in itself, it is an advance deduction on tax that is already owed on certain types of payments, commonly things like professional services, rent, contracts and dividends. Whoever is making the payment deducts a percentage upfront and remits it to the tax authority, and the person receiving the payment gets a credit for that amount against their actual tax liability later.
In practice, WHT often affects business owners, consultants and landlords more directly than salaried employees, since it usually applies to invoiced services and certain types of income rather than a fixed monthly salary.
VAT: Value Added Tax
VAT is a consumption tax, charged on the sale of most goods and services, and it is ultimately paid by the end consumer, you, whenever you make a purchase that VAT applies to. Businesses that are registered to charge VAT collect it from customers at the point of sale and remit it to the tax authority, they are essentially collecting it on the government's behalf rather than paying it out of their own profit.
Why the difference actually matters
Confusing these three is common, and it usually causes two kinds of problems. Either someone assumes a deduction they saw is being double counted when it is not, or a business owner fails to withhold or remit correctly because they did not realise WHT applied to a particular payment they made. Understanding which of these three you are actually dealing with in a given situation is the first real step toward getting your tax handling right, whether you are an employee, a consultant, or a business owner.