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ERPNext Customisation in Ireland
Standard ERPNext covers a lot, but every Irish business has a process that does not fit the default screens. We build those differences on the Frappe Framework as separate custom apps, with their own doctypes, scripts, reports and integrations, so your changes survive version upgrades and stay readable to the next developer who opens them.
ERPNext & FrappeImplementation · migration · AMCERPNext Customisation in Ireland
Open-source ERP, set up for Irish VAT and your way of working, with no per-user licence fees.
ERPNext Customisation in Ireland: the short answer
- What it is
- Design and development of custom apps, fields, scripts, reports and integrations on the Frappe Framework.
- Typical timeline
- Small changes ship within days; a new custom app is scoped, built and tested over a series of sprints.
- Irish specifics
- VAT3 script reports, an RCT register for contractors, groundwork for Revenue e-invoicing and GDPR request handling.
- Hosting
- Code kept in your own Git repository and deployed to Frappe Cloud or your self-hosted bench.
- Delivered by
- Shyphan AI Solutions, an ERPNext implementation partner and Zoho Premium Partner. Support on Irish time (GMT/IST), Monday to Friday. Call +44 7343 086577.
- Last reviewed
- 24 October 2026
Request your free quote
Tell us about your project and a senior ERPNext consultant - not a bot - replies within 24 hours with scope, timeline and a fixed quote. The first 30-minute discovery call is free, with no obligation.
- Free 30-minute discovery call
- Fixed-quote SOW - no surprises
- Irish-hours delivery
- VAT 23%, ROS & PAYE Modernisation ready
Customising ERPNext without breaking upgrades
The quickest way to ruin an ERPNext site is to edit core files. It works for a week, then the next upgrade overwrites the change or fails halfway through. We never touch ERPNext or Frappe source. Instead every change lives in one of three places: settings made through Customize Form, a client or server script for light logic, or a custom app under version control for anything substantial.
Choosing the right level matters. A new field on the sales order needs no code at all. A rule that blocks delivery when a customer is over their credit limit is a short server script. A complete subcontractor register with its own approval flow, reports and ROS-ready figures belongs in a custom app with tests. We explain which route we propose, and why, before writing anything.
From first record to the finished report
One open-source system, so each step feeds the next without re-keying.
What we build on the Frappe Framework
Custom doctypes and apps
New business objects, such as inspection logs, rental contracts or subcontract registers, built as doctypes inside a custom app with permissions, naming rules, list views and links to standard ERPNext records.
Client and server scripts
Validation, default values, calculated fields and automatic follow-up documents written in Python and JavaScript through Frappe hooks, so the rules run every time a document is saved, submitted or cancelled.
Print formats in Jinja
Invoices, delivery dockets, certificates and statements designed in HTML and Jinja, carrying your branding, a VAT breakdown by rate and any wording your customers or auditors expect to find on the page.
Script and query reports
Reports that standard ERPNext lacks, written as script reports with filters, totals and drill-down, from VAT summaries by rate to stock ageing by batch or gross margin by sales representative.
Integrations through the API
We connect ERPNext with web shops, bank statement files, shipping carriers, payroll packages and your own systems using the Frappe REST API, webhooks and scheduled jobs, with every error logged for review.
Version control and testing
Every custom app sits in a Git repository you own, with automated tests for key logic and a staging site where changes are approved before they are deployed to production.
ERPNext and the Frappe apps we implement
One open-source platform, one database, no per-user licence fees.
Irish requirements we often build for
| Topic | The Irish rule | What we set up |
|---|---|---|
| VAT3 report | Irish VAT-registered businesses usually file a VAT3 return every two months on ROS, reporting VAT on sales and VAT on purchases for the period. | We write a script report that maps each tax account and template to the return's boxes, totals them by period and links every figure back to its source invoices for checking. |
| Relevant Contracts Tax | Principal contractors in construction, forestry and meat processing operate RCT through eRCT on ROS, deducting 0%, 20% or 35% from subcontractor payments as Revenue directs. | A custom app records subcontracts, payment notifications and the rate Revenue confirms, posts deductions to a liability account and produces a monthly summary. It does not file with Revenue directly. |
| E-invoicing groundwork | Revenue has announced a phased move to B2B e-invoicing for Irish businesses, aligned with the EU's VAT in the Digital Age package. | We keep invoice data structured and complete, and design custom apps so that a structured e-invoice export can be added as a module once the Irish format is confirmed. |
| Data subject requests | Under GDPR and the Data Protection Act 2018, people can ask what personal data you hold about them, and the Data Protection Commission enforces those rights in Ireland. | A small custom tool gathers one person's records across contacts, leads, customers and employees into a single export, and can anonymise records you no longer need to keep. |
We configure the system and check it against your accountant’s figures; we are not tax advisers, and your accountant files the returns. Last reviewed 24 October 2026.
How a customisation request is delivered
Requirement note
You describe the problem in business terms. We write it back as a short requirement note with examples, so both sides agree on what done looks like before estimating.
Technical design
We choose between configuration, a script or a custom app, list the doctypes and hooks involved, and give a fixed estimate for the agreed design.
Build in sprints
Development happens in short sprints against a staging copy of your site, with a demo at the end of each sprint so you can steer early.
Test on staging
Automated tests cover the core logic, and your users test real cases on staging. We also run the change against the next ERPNext version where one is due.
Deploy and document
The approved release is deployed to production in a quiet window, and a short technical note plus a user guide is added to your repository and knowledge base.
Every ERPNext page for Irish businesses
Services
Written and reviewed by Vikas Saroj, Co-Founder, COO & Growth at Shyphan AI Solutions, who owns ERPNext, Odoo and Zoho delivery for Irish clients. Reviewed against current Irish rules on 24 October 2026. Meet the team · LinkedIn
ERPNext Customisation in Ireland: questions answered
Will customisations break when ERPNext is upgraded?
Who owns the code you write?
Can you customise a site another developer built?
Should we use Server Scripts or a custom app?
Can ERPNext connect to our Shopify or WooCommerce store?
Do you document what you build?
Request your free quote
Tell us about your project and a senior ERPNext consultant - not a bot - replies within 24 hours with scope, timeline and a fixed quote. The first 30-minute discovery call is free, with no obligation.
- Free 30-minute discovery call
- Fixed-quote SOW - no surprises
- Irish-hours delivery
- VAT 23%, ROS & PAYE Modernisation ready