An open-source ERP aligned with Canadian and Quebec tax and payroll rules.
ERPNext implementation for companies in Montreal, Quebec and Canada: multi-jurisdiction GST/QST/HST sales taxes, payroll structured for federal and provincial deductions (QPP, QPIP, EI), and T4 / RL-1 slip data produced with Frappe HR.
Business context and modernization stakes.
The Canadian tax regime: tax depends on the province
Canada layers a 5% federal GST with provincial taxes: 9.975% QST in Quebec, harmonized HST in several provinces, separate sales taxes elsewhere. The applicable tax depends on the place of supply, not the seller's head office. ERPNext handles this through per-jurisdiction tax templates and tax categories per customer and item — a configuration we systematically validate with your CPA before go-live.
Quebec payroll: two administrations, two slips
A Quebec employer answers to two administrations: the Canada Revenue Agency (federal income tax, EI) and Revenu Québec (provincial tax, QPP, QPIP, employer contributions). At year-end, every employee receives a federal T4 and a provincial RL-1. Frappe HR models these deductions as formula-based salary structures and produces the slip data. Our position is clear: we configure and build the statements, and your CPA or certified payroll provider validates rate tables and filing — the safest combination.
ERPNext + Frappe HR configured for Canada / Quebec: GST/QST, T4, RL-1
Challenges
- Configure multi-jurisdiction sales taxes: federal GST, QST in Quebec, HST in harmonized provinces, based on place of supply.
- Produce compliant Quebec payroll: separate federal and provincial deductions (income tax, QPP, QPIP, EI) and employer contributions.
- Generate T4 (federal) and RL-1 (Quebec) slip data from a single employee file.
- Meet Quebec personal-information requirements (Law 25) in hosting choices and data governance.
ATLAS approach
- ERPNext tax templates per province (GST, QST, HST) validated with your CPA.
- Frappe HR salary structures configured with formulas for federal and Quebec deductions, revised at every rate-table update.
- Development of the output statements needed for T4 and RL-1 slips and employer summaries, validated with your accountant.
- Hosting options: cloud with Canadian data residency for Law 25, or dedicated infrastructure.
Expected outcomes
- Correct sales taxes on every invoice, whatever the delivery province.
- Auditable payroll: every deduction is a visible formula, not a black box.
- Year-end data ready for T4 and RL-1 slips, handed to your CPA or payroll provider.
- An open-source ERP with no per-user license, hostable in Canada.
What decision-makers ask about this path.
Does ERPNext handle GST and QST?+
Yes. ERPNext tax templates configure federal GST, Quebec QST and HST for harmonized provinces, applied by place of supply. Tax reports feed your CRA and Revenu Québec filings.
Can Frappe HR produce T4 and RL-1 slips?+
Frappe HR produces the required data: annual accumulations per employee, federal and provincial deductions, employer contributions. We build the output statements matching the slip boxes; final validation and filing stay with your CPA or payroll provider.
Do you serve Montreal businesses?+
Yes. We operate in co-delivery with our Montreal-based partners, who carry the local relationship, while delivery runs from our Tunis nearshore center with organized timezone overlap with North America.
Does this modernization path match your context?
We frame the trajectory, the budget, and the deliverables in a first thirty-minute conversation. A short POC can be proposed before committing to the full program.
Start this path →