Should freelancers ask for a deposit?
For new clients and projects of more than a few days, a deposit of 25 to 50% is common. Invoice it at the start and deduct it on the final invoice.
What can I do if a client pays late?
Send a reminder on the due date and again a week later. In the UK the Late Payment of Commercial Debts (Interest) Act lets you claim interest at 8% over the Bank of England base rate, plus fixed compensation, on business invoices. In the US, late fees should be agreed in your contract.
Do I charge VAT or sales tax as a freelancer?
In the UK only once you are VAT registered, which is compulsory above £90,000 of taxable turnover. In the US most freelance services are not subject to sales tax, though some states tax certain digital and design services.
Can I invoice a client in another currency?
Yes. Pick the client's currency; amounts are formatted the way that currency is written.