Zoho Invoice is completely free for most small businesses and stores data in EU data centres. For Irish freelancers and sole traders who need professional invoicing without cost, it's the top pick.
Stripe Invoicing is built into the Stripe payments platform. No monthly fee - pay 0.4% per paid invoice. SEPA Direct Debit makes it ideal for Irish SaaS and subscription businesses. Here's the 2026 review.
Invoice Ninja is free open-source invoicing software with a self-hosted option for Irish data control. Here is how it meets Revenue invoice-content requirements, handles Irish VAT multi-rate, and integrates SEPA payments via Stripe.