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GroovyMark WebX
Web Development

Invoice & Billing System

Get paid faster, automatically

Recurring billing, invoicing, and dunning that runs without you.

Timeline: 8 – 14 weeks
Deliverables: 4
Invoice & Billing System
Overview

What we build, and why it works.

Billing shouldn't be where your revenue leaks. We build invoicing systems that handle one-off, subscription, and usage-based pricing — with multi-currency, tax rules, dunning, and finance-team-grade reporting.

What you get

  • Billing engine
  • Customer portal
  • Accounting integration
  • Finance dashboard
Capabilities

Built around the features that actually matter.

Subscriptions & usage billing

Tiers, seats, metered usage, mid-cycle changes with proration.

Multi-currency & tax

Localised currencies, VAT/GST/sales-tax, e-invoicing where required.

Automated dunning

Smart retries, customer notifications, and escalation rules.

Branded invoices & portal

Customers view, download, and pay invoices on your domain.

Accounting sync

QuickBooks, Xero, NetSuite, and SAP integration.

Audit trail

Full event log for finance and compliance teams.

Business benefits

What this looks like on your scorecard.

  • Lower involuntary churn with smart retries
  • Faster cash collection from automated reminders
  • Cleaner books with native accounting sync
  • Less manual finance work, more strategic time

Common use cases

Where we've shipped this, or something close to it.

  • SaaS & subscription products
  • Professional services firms
  • Membership organisations
  • Usage-billed APIs & infrastructure

Typical tech stack

Next.jsStripe Billing / PaddleQuickBooks / Xero / NetSuitePostgreSQLPDF generationS3
How we ship

Our delivery process for invoice & billing system.

01
Step 1

Pricing model

Map plans, usage, taxes, and edge cases.

02
Step 2

System design

Billing engine, dunning, and accounting flows.

03
Step 3

Build & integrate

Customer portal, ops dashboard, sync.

04
Step 4

Migrate & launch

Backfill data, parallel run, cutover.

Invoice & Billing System

Let's scope your invoice & billing system.

Share a few details about your goals and constraints — we'll respond within one business day with sharper questions and a recommendation.