Every payroll cycle, someone in your business is chasing timesheets. Managers are approving entries in bulk without checking them. Finance is exporting CSV files from one system and importing them into another. And somewhere, a spreadsheet is doing a job your timesheet software was supposed to handle.
Most off-the-shelf timesheet tools assume a simple approval chain: employee submits, manager approves, done. If your business needs conditional routing (overtime to finance, standard hours to line managers), cost-centre-based approvals, or anything beyond a linear A-to-B-to-C chain, you end up working around the tool rather than with it.
We build custom timesheet approval systems for UK businesses. The software matches your actual approval workflows, integrates directly with your payroll and accounting systems, and you own it outright. No per-user licensing. No workarounds. No surprises at renewal time.
Why off-the-shelf timesheet software falls short
SaaS timesheet tools work well enough for small teams with straightforward approval needs. The problems start when your business has any complexity at all.
Rigid approval workflows. Most tools offer single-level or basic sequential approval. If you need matrix approvals (project manager and finance both sign off), conditional routing (overtime requires a different approver), or cost-centre-based chains, you are stuck. The workaround is usually email or a separate spreadsheet.
Weak UK payroll integration. The majority of SaaS timesheet tools are built for the US market. Integration with Sage, Xero, or HMRC RTI reporting is often limited to CSV export, which means someone in your finance team is manually importing data every pay run. That is where errors creep in.
Per-user pricing that scales against you. At £3-15 per user per month, costs compound quickly. A 50-person team on a mid-tier plan pays £3,000-9,000 per year. A 100-person team can easily spend £9,000-18,000 annually. Add Zapier fees for integrations the tool does not support natively, premium support charges, and the cost of switching vendors if you outgrow the tool.
Limited compliance features. Few off-the-shelf tools include automatic Working Time Regulations checking (flagging the 48-hour weekly average), proper GDPR data handling with retention policies, or audit trails detailed enough to satisfy an HMRC or external auditor review. You end up bolting compliance on manually.
No custom fields or business rules. If you need to track shift types, equipment IDs, cost codes, hazard zones, or any data point specific to your industry, most tools simply do not support it. Custom fields, where available, are usually cosmetic rather than tied to validation or approval logic.
Approval bottlenecks nobody sees. When a manager with 50 direct reports has a pile of timesheets to approve, they either approve blindly or the queue backs up and delays payroll. Without exception-based alerting and validation rules that catch obvious errors before they reach the approver, the bottleneck just moves from one part of the process to another.
What we build instead
We build timesheet approval systems around how your business actually works, not around what a SaaS product happens to support.
Your approval logic, not theirs
Before we write any code, we map your current approval workflows. The system we build follows those workflows precisely: conditional routing, matrix approvals, cost-centre-based chains, delegation rules for absent managers, and automatic escalation when approvals stall. If your rule is “timesheets over 8 hours on a single day need QA review” or “premium rate work needs both the project manager and finance sign-off,” we build that in.
Direct payroll and accounting integration
Your timesheet system connects directly to your accounting and payroll platforms via API, not CSV export. We build integrations with Xero, Sage, QuickBooks, and other UK payroll systems. We can also build HMRC RTI export so approved hours feed straight into your real-time payroll reporting. No manual re-keying. No reconciliation spreadsheets.
Validation that catches problems early
The system validates entries against your business rules before they ever reach an approver. Automatic flagging for entries exceeding daily limits, missing project codes, overtime thresholds, or Working Time Regulations limits. Managers only review exceptions, not routine entries.
One-time investment, not recurring fees
You pay for the build and you own the software. No per-user licensing. No annual price increases. No vendor lock-in. The spend is capital expenditure, and most businesses with 25+ employees break even within 18-24 months compared to cumulative SaaS costs.
UK compliance built in
Every build includes UK GDPR-compliant data handling (role-based access, data minimisation, automated retention policies, subject access request support), Working Time Regulations checking, and a tamper-proof audit trail recording every submission, edit, approval, and rejection with timestamps and user attribution. We can host on UK data centres or deploy on your own infrastructure.
Built to grow with you
New departments, additional approval levels, mobile access for field workers, extra integrations — the system extends without rebuilding. Because you own the codebase, you control the roadmap.
Features
Every build is different, but here is what a typical timesheet approval system includes.
Core
- Time entry — timer, manual entry, and mobile capture with offline support
- Timesheet submission — weekly or monthly cycles with automatic locking after submission and configurable reminders
- Approval workflow — single-level, multi-level (sequential or parallel), matrix, and conditional routing
- Audit trail — complete history of every entry, edit, approval, rejection, and delegation with timestamps
- User roles — granular permissions for employees, supervisors, HR, finance, and administrators
- Project and task assignment — link time entries to projects, clients, cost centres, or task codes
Reporting and analytics
- Approval metrics — submission rates, time-to-approval, bottleneck identification
- Labour cost analysis — cost by project, employee, department, or cost centre with budget variance
- Utilisation reports — billable vs non-billable hours, resource utilisation rates
- Compliance reports — Working Time Regulations, overtime, time-off accruals, audit trail exports
- Payroll-ready exports — formatted for direct import into your payroll system
- Custom dashboards — real-time visibility into approval status and anomalies
Automation
- Workflow routing — automatic assignment to the right approver based on your rules
- Validation rules — flag entries exceeding daily limits, missing codes, or overtime thresholds before approval
- Reminders and escalation — email or Slack notifications for pending submissions, with automatic escalation if approvals stall
- Auto-lock — approved timesheets locked to prevent post-hoc changes
- Delegation — managers assign temporary approval authority during absences, with full audit logging
- Scheduled reports — automated delivery to stakeholders on your chosen schedule
Integrations
- Accounting — Xero, Sage, QuickBooks (API-based, not CSV)
- Payroll — direct feeds to UK payroll platforms, HMRC RTI export
- Project management — Jira, Asana, Monday.com, Wrike
- HR systems — BambooHR, Workday, or your existing HRIS
- Communication — Slack and Microsoft Teams notifications for approvals and reminders
- Calendar — Google Calendar and Outlook import to pre-populate timesheets
- Custom APIs — webhooks and REST APIs for any bespoke system
How we deliver
1. Discovery and planning (2-4 weeks)
We run a requirements workshop to map your current approval workflows, identify every integration point, and review compliance requirements. You get a solution architecture document and a detailed project plan before any development starts.
Key activities: process mapping, approval chain documentation, data migration assessment, compliance review, integration scoping.
2. Development (6-16 weeks)
We build in agile sprints with regular demos. You see working software every two weeks and give feedback that shapes the next sprint. Core functionality (time entry, submission, approval, audit trail) is built first. Integrations and advanced features follow.
A simple system with single-level approval takes 6-8 weeks. Multi-level approvals with accounting integrations take 10-16 weeks. Complex matrix workflows with mobile apps and multiple system integrations can take 20+ weeks.
3. Testing and deployment (2-4 weeks)
Full system testing, user acceptance testing with your team, data migration (if applicable), and staged rollout. We typically start with a pilot group of 5-10 users before opening the system to everyone.
4. Training and handover (1-2 weeks)
Administrator training (4-8 hours), manager training on approval workflows (1-2 hours), and employee training on time entry (30 minutes to an hour). We provide tailored user guides and reference documentation. Train-the-trainer sessions available if you prefer internal champions to handle ongoing support.
5. Post-launch support (3 months included)
Bug fixes, workflow adjustments, and minor enhancements. After the included period, you can choose a retained support package or manage the system internally. Either way, you have the full codebase and documentation.
Most projects run 3-6 months from first conversation to go-live.
What it costs
Custom development costs more upfront than a SaaS subscription. Whether it costs more overall depends on your team size, how long you plan to use the system, and how much you are currently spending on workarounds.
Realistic pricing by complexity:
- Simple (single-level approval, no integrations, basic reporting): £8,000-15,000 build cost, 4-8 weeks
- Medium (multi-level approvals, 1-2 integrations, mobile-responsive, custom validation rules): £20,000-40,000, 10-16 weeks
- Complex (matrix approvals, 3+ integrations, native mobile app, advanced compliance, BI integration): £50,000-100,000+, 20-32 weeks
What drives the price: number of approval levels and conditions, how many external systems need integrating, reporting complexity, compliance requirements, and whether you need a native mobile app or a responsive web interface.
The hidden costs of SaaS you might not be counting: per-task Zapier fees for integrations the tool does not support, premium support or SLA charges, internal time spent on CSV exports and manual reconciliation, training costs not included in the licence, and data migration costs if you ever switch vendors.
When custom makes financial sense: for teams of 25+ employees, the break-even point is typically 18-24 months. At 50+ employees, SaaS licensing alone can exceed £3,000-9,000 per year. At 100+ employees, custom software is clearly cheaper over a three to five year period when you factor in licence fees, integration costs, and the admin time saved by eliminating manual workarounds.
We provide a detailed quote after the discovery phase, based on your actual requirements.
Industry applications
Professional services
Billable hours are revenue. The system tracks time against clients and matters, applies custom billing rates (standard, premium, discounted), and routes approvals through the project partner, then finance, before feeding approved hours into your invoicing workflow. Utilisation and realization rate reporting built in.
Construction and field services
Crews working across multiple sites need mobile time entry with offline support. GPS verification confirms workers are on the right site. Approval chains run from site supervisor to trade lead to project manager to accounting. Time entries link directly to job codes for accurate project costing.
Healthcare
Shift-based scheduling with on-call tracking, break time logging, and mandatory compliance with Working Time Regulations. Approval workflows run from ward manager to nursing director to HR. Integration with staff scheduling systems and compliance reporting for CQC requirements.
Manufacturing
Shift tracking with day, night, and weekend differentials. Time entries tied to production lines and cost centres. Integration with ERP systems for real-time labour cost allocation. Overtime validation against union agreements and collective bargaining rules.
Retail and hospitality
Clock-in and clock-out via mobile or on-site kiosk. Complex shift rules including split shifts, late-night premiums, and National Minimum Wage compliance alerts. Approval routing from store manager to regional manager to payroll. Integration with POS systems for reconciliation of scheduled vs actual hours.
Tech and software teams
Integration with Jira for automatic time-to-ticket mapping. Simple, transparent approval process (engineering lead to project manager to finance) with no surveillance features. Sprint and project dashboards. Slack-based notifications for approvals.
Non-profits and funded organisations
Tracking time against funded projects and grant codes with volunteer hour recording. Reporting formatted for funder requirements. Approval workflows that match governance structures.
Because we build from scratch, the system uses your industry’s terminology, follows your compliance rules, and handles the specific approval logic your sector demands.
Common Questions About Custom Timesheet Approval Software
How does custom development cost compare to SaaS timesheet tools?
SaaS timesheet tools typically cost £3-15 per user per month. For a 50-person team, that is £1,800-9,000 per year in licensing alone, before you add Zapier costs for integrations, premium support fees, or data migration charges. A custom build costs more upfront (typically £20,000-40,000 for a medium-complexity system), but you own it outright. Most businesses with 25+ employees break even within 18-24 months. At 100+ employees, custom software is clearly cheaper over a three to five year period.
What's the typical development timeline?
A straightforward system with single-level approval and CSV payroll export takes 8-12 weeks. A medium-complexity build with multi-level approvals and integrations with one or two systems like Xero or Sage takes 10-16 weeks. Complex enterprise builds with matrix approvals, multiple integrations, and mobile apps can take 20-32 weeks. We provide a detailed timeline after the discovery phase.
Can you integrate with our payroll and accounting software?
Yes. We build direct API integrations with Xero, Sage, QuickBooks, and other UK payroll platforms. We can also build HMRC RTI export functionality so approved timesheets feed straight into your payroll reporting. For project management, we integrate with tools like Jira, Asana, and Monday.com. During discovery, we map every integration point and test thoroughly in staging before go-live.
What UK compliance requirements do you cover?
Every build includes UK GDPR-compliant data handling with role-based access, data minimisation, and subject access request support. We build automatic Working Time Regulations checking, which flags entries exceeding the 48-hour weekly average. We include tamper-proof audit trails that satisfy HMRC and external auditor requirements. For regulated industries like healthcare or finance, we add sector-specific compliance features such as CQC reporting or ISO 27001 controls.
How do you handle updates and changes after launch?
We include 3 months of post-launch support covering bug fixes, workflow adjustments, and minor enhancements. After that, you can choose a retainer support package or handle changes internally. We provide full documentation, admin training, and the complete codebase, so you are never locked in.
What if we only need a simple system to start?
We often build in phases. A minimum viable product covering time entry, single-level approval, basic reporting, and audit logging typically costs £12,000-25,000 and takes 8-12 weeks. You can then add multi-level approvals, accounting integrations, mobile apps, and advanced reporting in a second phase once the core system is running.