There is a cost hiding in plain sight in most payroll bureaus. It is not the cost of software. It is the cost of the manual processes that software could replace — but hasn’t yet, because the features are there and not switched on. BrightPay Cloud includes six digital workflow features. Each one replaces a manual process. Each manual process has a measurable cost in staff time and error correction.
This article sets out exactly how to calculate that cost — using the same methodology and benchmarks that underpin the BrightPay Cloud ROI Calculator. Run the numbers for your own bureau, and you will have a financially defensible answer to the question: What is the manual process actually costing us?
1Calculate Your All-In Hourly Rate
Before any feature-level calculation is possible, you need a fully loaded hourly rate for your payroll administrators. Gross salary understates the true cost. A 30% employer on-cost loading is applied to account for employer National Insurance contributions, statutory pension contributions, paid annual leave, and other employer overhead — consistent with HMRC and CIPP guidance.
Loaded Annual Cost
Gross salary × 1.30
e.g. £26,000 × 1.30 = £33,800
That loaded cost is divided by net productive hours. Subtract 224 hours for annual leave, 64 hours for bank holidays, and 32 hours for sickness from the 2,080 gross annual hours.
Net Productive Hours
2,080 − 224 (leave) − 64 (bank holidays) − 32 (absence) = 1,760 hrs/yr
All-In Hourly Rate
(Gross salary × 1.30) ÷ 1,760
e.g. (£26,000 × 1.30) ÷ 1,760 = £19.20 / hr
2Establish Your Annual Run Volume
Every time benchmark in the calculator is expressed per employer client, per pay run. Total annual impact depends on your run volume.
Total Annual Runs
Number of employer clients × Annual pay frequency
e.g. 100 clients × 18 (mixed) = 1,800 runs/yr
| Pay Frequency | Runs per Year | Example (100 clients) |
|---|---|---|
| Monthly | 12 | 1,200 runs/yr |
| Fortnightly | 26 | 2,600 runs/yr |
| Weekly | 52 | 5,200 runs/yr |
| Mixed (default) | 18 | 1,800 runs/yr |
3Apply the Scenario Factor
Not every bureau will switch on all features simultaneously, and not every employer client will adopt at the same pace. The calculator applies a scenario factor to reflect realistic adoption rates. It is the single most important sensitivity lever in the model.
100% is deliberately excluded — it is not operationally achievable. The residual 15% in the optimistic scenario accounts for clients who will never fully adopt the digital workflow.
4Calculate the Cost of Each Manual Workflow
Each of the six feature calculations follows the same structure: staff time cost + error correction cost. Here is how each one works, with benchmarks from independent industry research.
Payroll Entry Request
82% time saving
Your team chases each employer by email or phone, waits for spreadsheets or handwritten notes, collates the responses, and re-keys every figure into BrightPay. This is the single most time-intensive and error-prone step in a manual payroll workflow.
Gross saved min = (45−8) × 1,800 = 66,600 min
Adjusted hours = (66,600 × 0.60) ÷ 60 = 666 hrs/yr → £12,787 saved
Payroll Approval Request
84% time saving
Your team prepares draft payroll summaries, emails them to the employer contact, chases for a response, logs verbal or email approval, and handles late-stage corrections. When multiple approvers are involved, this workflow expands considerably.
Gross saved min = (25−4) × 1,800 = 37,800 min
Adjusted hours = (37,800 × 0.60) ÷ 60 = 378 hrs/yr → £7,258 saved
Client Portal
100% time saving
Your team emails payroll summaries and reports to employers, responds to “what do we owe HMRC?” queries, fields calls about P30 liabilities, and manages report distribution manually — every pay run, every client.
On finalisation, payroll summaries, P30 liabilities, and employer reports publish automatically to each employer’s secure portal. No email. No attachment. No manual step.
Employee Portal
100% time saving
Your team distributes payslips by email or post, fields payslip queries relayed through employers, handles P60 and P45 distribution at year-end, and responds to leave-balance queries. P60 distribution alone is a significant annual overhead.
Manager Portal
92% time saving
Leave approval requests are relayed by employees to managers by text or call, managers relay their decision to the employer, and the employer contacts the bureau to update BrightPay. A three-step relay chain for what should be a single self-contained transaction.
Mobile App
88% time saving
Out-of-hours leave requests and employee detail updates are relayed to the bureau via the employer by email or text, creating an informal queue of changes that must be manually entered into BrightPay ahead of the next pay run.
5Total Your Annual ROI
The total annual value of switching to digital workflows is the sum of staff cost savings and error correction savings across all enabled features at the chosen scenario.
Total Annual ROI
Sum of (staff cost saving + error correction saving) across all features
= Total hours saved × Hourly rate + Error events × Correction time × Hourly rate
Worked Example: 100-Client Bureau, Realistic Scenario
A bureau with 100 employer clients, 30 average employees per client, mixed pay frequency (18 runs/year), payroll administrator salary of £26,000, all six features enabled, at the realistic scenario (0.60).
| Feature | Hours saved/yr | Staff cost saved | Error cost avoided |
|---|---|---|---|
| Payroll Entry Request | 666 | £12,787 | £9,331 |
| Payroll Approval Request | 378 | £7,258 | £4,424 |
| Client Portal | 360 | £6,912 | £2,074 |
| Employee Portal | 270 | £5,184 | £1,037 |
| Manager Portal | 198 | £3,802 | £9,331 |
| Mobile App | 126 | £2,419 | £518 |
| Total annual value | 1,998 hrs | £38,362 | £26,715 |
The Calculation Is the Conversation
The BrightPay Cloud ROI Calculator runs this calculation for your actual numbers — your client count, your employee headcount, your pay mix, your salary base. The output is specific to your bureau, not a generic industry estimate.
The value of running the numbers is not only the figure it produces. It is the clarity it creates. Once the cost of the manual process is visible — in pounds and hours, not as a vague sense that things could be more efficient — the decision about whether to enable digital features stops being a question of change management appetite and becomes a question of arithmetic.
For most bureaus, the arithmetic is straightforward: the manual process is costing more than the digital alternative would save them in the first year.
