The verdict in three sentences
For a Toronto area employer with 320 employees, connecting a custom HR portal to ADP Workforce Now or Dayforce costs 9,000 to 28,000 CAD for the integration alone (2026 market ballpark) and takes 3 to 6 weeks. Payroll stays the system of record: T4 slips, Records of Employment and remittances are still produced by the payroll provider, and the portal only sends approved time off, overtime and one off payments. The business case is the end of copy and paste between spreadsheets and payroll, typically 2 to 3 days of payroll admin per month, which beats a full HRIS subscription when your rules are unusual or your portal already exists.
What actually flows into payroll
The portal collects requests, managers approve, and the integration turns each approved event into a payroll earning or deduction code. The work is mostly mapping: your internal leave types and premiums must match the earning codes configured in your payroll account. Depending on your contract, the provider offers a file import, a partner API, or both, so ask your account manager what your plan includes before requesting quotes.
| Item | Source in the portal | Payroll target | Complexity |
|---|---|---|---|
| Vacation and personal days | Employee request, manager approval | Time off codes and balances | Low |
| Sick leave | Employee notice, HR verification | Absence code only, no medical details | Medium |
| Overtime | Manager entry or time clock export | Hours by premium rate | Medium |
| Shift premiums | Schedule rules in the portal | Earning codes per shift | Medium |
| One off bonuses | Manager proposal, HR approval | Bonus earning codes | Low |
| New hires and terminations | HR file | Employee profile, usually out of scope at first | High |
Keep hires and terminations out of version one. They touch tax forms, benefits and ROE triggers, and can eat a third of the budget for a handful of events per month.
Three integration levels and their budgets
| Level | How it works | Cost (CAD, 2026 market ballpark) | Time |
|---|---|---|---|
| 1. Controlled export | Portal generates a payroll import file, payroll admin uploads and checks it | 9,000 to 13,000 | 3 weeks |
| 2. Automated import with checks | Scheduled push, exception report for unknown employees, missing codes or negative balances | 13,000 to 20,000 | 4 weeks |
| 3. Two way sync | Accrued balances calculated by payroll flow back to the portal every night | 20,000 to 28,000 | 5 to 6 weeks |
Vacation entitlement and pay rules under Ontario's Employment Standards Act should stay calculated in payroll, where your provider maintains them. The portal displays balances; it does not reinvent the legal calculation. Privacy obligations depend on whether your organisation is federally or provincially regulated, so confirm the applicable rules with counsel and keep medical documents out of the integration entirely.
If the portal itself still needs to be built, Kolonell's prices as a nearshore option are 3,810 to 6,100 EUR for a simple application (2,500,000 to 4,000,000 FCFA) and 6,100 to 10,670 EUR for a medium one with multiple approval workflows, with maintenance from 53 EUR per month. Work is delivered in English with overlap on Toronto mornings.
HRIS subscription or custom portal over 3 years
| Criterion | HRIS subscription | Custom portal and integration |
|---|---|---|
| Cost for 320 employees | 8 to 18 CAD per employee per month, about 30,700 to 69,100 CAD a year (2026 market ballpark) | One off build, then maintenance |
| 3 year total | About 92,000 to 207,000 CAD | 30,000 to 70,000 CAD locally, integration included (2026 market ballpark) |
| Payroll connector | Often native for major providers, check your plan | Built to your codes |
| Union or shift rules | Limited to the configuration offered | Coded from your collective agreement |
| Time to launch | 4 to 8 weeks | 6 to 10 weeks with the portal |
| Exit | Export on vendor terms | You own the code and data |
An HRIS is the sensible choice when your rules are standard and you also want performance reviews and onboarding in one place. Custom wins with unionised shift premiums, several collective agreements, or an existing intranet employees already use.
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Illustrative example: Priya, HR Director at a 320 person food distributor in Mississauga, has a payroll administrator who re-keys vacation, overtime and shift premiums every pay period. That is about 2.5 days a month, or 30 days a year at a loaded 420 CAD a day: 12,600 CAD a year. Corrections after pay runs add roughly 5 adjustments a month at 1 hour and 55 CAD each, 3,300 CAD a year.
A level 2 integration at 17,000 CAD saves 15,900 CAD a year, minus about 1,800 CAD of yearly support. Payback lands at around 14 to 15 months (17,000 / 14,100). An HRIS at 12 CAD per employee would cost 46,080 CAD a year without handling her shift rules.
FAQ
How much does a payroll integration for a custom HR portal cost in Toronto?
Plan for 9,000 to 28,000 CAD depending on the level, from a controlled export file to a two way balance sync (2026 market ballpark). Most 200 to 500 employee companies land on the automated import at 13,000 to 20,000 CAD.
Does the integration affect T4s or Records of Employment?
No, those remain produced by your payroll provider. The integration only feeds approved variables before each pay run, which removes manual re-entry without touching year end filings.
ADP or Dayforce: does it change the budget?
The architecture is the same; the difference lies in which import formats and APIs your plan exposes. Expect 1 to 2 discovery calls with your provider to confirm access before development starts.
How long until the first live pay run?
Count 3 to 6 weeks of build, then run 1 or 2 pay periods in parallel with the old process. Most teams switch fully within 2 months of kickoff.
What about sick notes and medical data?
The portal sends only an absence code and dates to payroll. Supporting documents stay in a restricted HR folder accessible to 1 or 2 people.
Let's scope your project. Tell us your payroll provider, headcount and the variables you need to send, and we will price a portal and integration with a 3 to 6 week plan for the connector. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
