How to Automate Your Invoicing and Save 8 Hours a Week

The hidden cost of manual invoicing

Creating an invoice from a Word template, saving it, sending it by email, logging the send in a spreadsheet, manually following up two weeks later... This sequence, repeated for every client, can easily add up to 6 to 10 hours per week for an SME managing 50 active clients.

The real problem isn't just time — it's errors. Incorrect amounts, duplicate numbering, missing VAT, sending to the wrong contact — every mistake delays payment and damages your professional credibility.

The 4 levels of invoicing automation

Level 1: Auto-generation

The first step is generating invoices automatically from existing data (purchase orders, accepted quotes, recurring contracts). A modern ERP creates the invoice in one click with all information pre-filled: client details, product lines, applicable VAT rate, currency, and payment terms.

Level 2: Automated delivery

Once generated, email delivery can be fully automated — with the PDF attachment, a personalized message ("Hello [FirstName]"), and bank details clearly stated. Recurring invoices (subscriptions, retainers) can be scheduled in advance to send automatically on the 1st of every month.

Level 3: Automated follow-ups

This is where automation delivers the most value. Configure follow-up rules:

• D+3 after sending: delivery confirmation email
• D-3 before due date: gentle reminder
• Due date: reminder with payment portal link
• D+7 after due date: firm reminder with new deadline
• D+21: automatic notification to your account manager

These automated reminders are built into VIA ERP and reduce late payments by 58% on average based on our client data.

Level 4: Reconciliation and reporting

Full automation integrates received payments (bank transfer, check, online) and updates invoice status in real time. Your financial dashboard shows billed, collected, and outstanding revenue at a glance — without ever opening Excel.

Compliance requirements: what to automate

Proper invoicing requires several mandatory elements that can be fully automated:

• Sequential unique numbering — managed by the ERP, never duplicated
• Correct VAT rate (19%, 7%, or 0%) based on product category — applied automatically from product settings
• Client tax ID for B2B — entered once on the client record, copied automatically
• Currency handling — local currency for domestic clients, auto-conversion for international

Migration: moving from your current system

Most SMEs are hesitant to migrate for fear of losing historical data and disrupting clients. Here's a progressive 3-week approach:

• Week 1: Import client records (CSV from Excel) and configure products/pricing
• Week 2: Create your first 5 invoices in both systems in parallel for validation
• Week 3: Full changeover, archive historical invoices as PDFs in the ERP