Branded invoices with a payment link, in WhatsApp. Say the word when the job’s wrapped and the invoice goes out — your customer pays in the same thread they got the quote in.
When the work’s finished, the invoice writes itself from the quote you already sent — your line items, your rates, VAT at 20% handled for you. It lands as a branded PDF with a card-payment link, so there’s nothing to chase and nothing to type up at the end of the night.
Your customer taps the link and pays by card in the same WhatsApp thread — no portal, no login, no “can you send your bank details?”. You see it marked paid the moment it clears.