Take control of your subcontractor payment applications

Subcontractor payment application software
for your whole supply chain.

ContractorApplications gives principal contractors and main contractors a single platform to receive, assess and certify payment applications from their entire supply chain - with a self-service portal that lets subcontractors submit and track their own applications.

Get Started See the Subcontractor Portal
100%
Self-service subcontractor portal included
GBP
Full retention & variation tracking
AES‑256
All documents & data encrypted at rest
UK
Hosted & supported in the UK
Developed by
Construct Software
UK-hosted & GDPR-ready
AES-256 encrypted at rest

The Problem

Managing subcontractor payment applications by email
is costing you time, money and accuracy

Quantity surveyors and commercial managers spend hours processing applications that arrive in different formats by email, manually cross-checking against contracts, chasing missing breakdowns and updating spreadsheets that nobody else trusts. Disputes are common, retention is forgotten and the audit trail is a shared inbox.

Without ContractorApplications
  • Applications arrive by email in different formats - PDFs, spreadsheets, scanned letters
  • No consistent structure - comparing applications to contract values is manual work
  • Certification amounts typed into spreadsheets with no audit trail
  • Retention tracked in a separate spreadsheet nobody keeps up to date
  • Variations agreed verbally, lost in email threads, disputed at final account
  • Subcontractors call to chase application status - nobody knows without digging
  • Pay-less notices missed or sent late due to lack of deadline tracking
  • Final account reconciliation takes weeks of manual cross-referencing
With ContractorApplications
  • Subcontractors submit structured applications through a self-service portal
  • Every application assessed against contract and previous certifications automatically
  • Certification values recorded with a full, timestamped audit trail
  • Retention calculated and tracked automatically per project and subcontractor
  • Variations submitted, costed, approved and recorded - all in one place
  • Subcontractors see their application status in real time - no chasing calls
  • Payment and pay-less notice deadlines tracked with automated reminders
  • Full financial history per subcontractor and project at any point in time

How It Works

From application submission to certification
in three steps

ContractorApplications is built around the actual commercial workflow of managing a subcontract - not a generic document system that's been re-labelled. Subcontractors submit, your team assesses and certifies, everyone has visibility.

1

Set up your projects and subcontracts

Create a project, add your subcontractors and define their contract values. Set retention percentages, payment terms and variation rules once per subcontract. Invite subcontractors to the portal - they can begin submitting immediately.

2

Subcontractors submit structured applications

Each subcontractor submits their payment application through the portal using a structured form. They provide a gross value claimed, a breakdown by trade or cost category, and can attach supporting documents. No more inconsistent PDFs and spreadsheets.

3

Assess, certify and record

Your QS or commercial manager reviews the application, adjusts the certified value where needed, records their assessment notes and issues the certification. Retention is deducted automatically. The subcontractor sees the certified amount immediately in their portal.


Platform Features

Everything you need to manage
subcontractor payment applications

Structured Payment Applications

Subcontractors submit applications through a structured portal form - gross value claimed, breakdowns, attachments and period dates. Your team receives a consistent, comparable submission every time rather than whatever format the subcontractor prefers.

Application Assessment & Certification

Review each application against the contract value, previous certifications and cumulative totals. Adjust the certified value, add assessment notes and issue the certification. The platform tracks gross certified, retention held and net due automatically.

Self-Service Subcontractor Portal

Every subcontractor gets a dedicated portal to submit applications, track certification status, view their payment history and respond to queries. Passwordless magic-link login. Works on any device. Keeps subcontractors informed without involving your team.

Project & Subcontract Management

Organise everything by project. Each project holds its own set of subcontracts, with contract values, payment terms, retention percentages and variation budgets defined per subcontract. Filter your dashboard and reports by project at any time.

Retention Tracking

Retention is calculated and deducted automatically from each certified application based on the percentage set for the subcontract. The platform tracks cumulative retention held, retention released and the balance due at any point in the project lifecycle.

Variation Management

Subcontractors submit variation requests through the portal. Your team reviews, adjusts the value and approves or rejects. Approved variations are recorded against the subcontract and can be included in payment applications. Full variation log maintained throughout.

Payment Deadline Tracking

Never miss a payment notice deadline again. The platform tracks the due date for each application based on your payment terms. Automated reminders alert your team before the pay-less notice window closes, giving you time to act.

Financial Dashboard

See the commercial position across all your projects and subcontracts at a glance. Total contract values, certified to date, retention held, variations approved and payments outstanding - all in one place, updated in real time.

Secure Messaging

Communicate directly with subcontractors about their applications through the platform. Messages are threaded per subcontractor and application. Subcontractors receive and reply via the portal - keeping all commercial conversations in one auditable place.

Accounting Integration

Push certified application data directly to Xero, QuickBooks Online or Sage Business Cloud. Certified values, retention and payment schedules flow through to your accounting system without manual re-entry, eliminating duplicate data and reconciliation errors.

Reports & CSV Exports

Export application registers, certification summaries, retention schedules and variation logs as CSV. Generate board pack PDFs showing commercial position by project. Filter by any combination of project, subcontractor, period or status before exporting.

Audit Trail & Data Security

Every action - application submitted, certification issued, variation approved, message sent - is logged with a timestamped audit entry and actor attribution. All documents and financial data are encrypted at rest using AES-256 encryption.


Who It's For

Built for both sides of the
subcontract relationship

ContractorApplications serves two distinct users - the principal contractors managing their supply chain commercially, and the subcontractors submitting and tracking their own applications. Both get exactly what they need from the same platform.

Principal Contractors & Main Contractors

For QS teams & commercial managers

Stop processing applications from your inbox. Get a structured, consistent view of every subcontractor's application - assessed against contract, tracked through to payment, fully auditable.

  • Receive structured applications - consistent format every time
  • Assess and certify against contract values and previous certifications
  • Automatic retention calculation and tracking per subcontract
  • Variation submission, review and approval workflow
  • Payment and pay-less notice deadline tracking with alerts
  • Financial dashboard across all projects and subcontracts
  • Xero, QuickBooks and Sage integration for certified values
  • Board pack PDF generation and CSV export suite
  • Full audit trail on every certification and decision
  • Secure messaging with subcontractors, threaded per application
Get Started
Subcontractors

For subcontractors submitting their own applications

Stop sending applications by email and waiting weeks to find out the outcome. The self-service portal gives every subcontractor a structured, transparent view of their applications and payment status.

  • Submit structured payment applications through a guided portal form
  • Attach supporting documents, breakdowns and schedules of value
  • Track application status in real time - submitted, under review, certified
  • See the certified value and any assessor notes immediately
  • View cumulative certified totals and retention held at a glance
  • Submit variation requests and track their approval status
  • Receive and reply to messages about specific applications
  • Access full payment history per project from one account
  • Works on any device - desktop, tablet or smartphone
  • Works for multiple principal contractors from a single account
Learn About the Portal

Subcontractors submit their own applications.
Your team just assesses and certifies.

The ContractorApplications subcontractor portal is a fully featured self-service web application - included as standard. Subcontractors log in, submit applications, track status and view their payment history, without involving your commercial team.

Subcontractor Portal - Dashboard
£124,500
Contract Value
£78,200
Certified to Date
£3,910
Retention Held
1
Under Review
Application 5 – Period ending 30 Apr 2025
Certified £18,400 · Net £17,482
Certified
Application 4 – Period ending 31 Mar 2025
Certified £16,800 · Net £15,960
Certified
Application 6 – Period ending 31 May 2025
Submitted £21,500 · Under review
In Review
Variation 3 – Additional groundworks
Submitted £4,200 · Awaiting approval
Pending
Variation 2 – Design change
Disputed · Awaiting response
Disputed
Dashboard - Live contract financials, application status and variation activity
Subcontractor Portal - Applications
App 6  ·  Period May 2025
Claimed £21,500
In Review
App 5  ·  Period Apr 2025
Claimed £18,750  ·  Certified £18,400
Certified
App 4  ·  Period Mar 2025
Claimed £17,200  ·  Certified £16,800
Certified
App 3  ·  Period Feb 2025
Claimed £15,900  ·  Certified £15,900
Certified
App 2  ·  Period Jan 2025
Claimed £14,600  ·  Certified £13,900
Certified
Applications - Full history of submitted applications with claimed and certified values
Subcontractor Portal - Variations
VO-003
Additional groundworks – soft spot repairs  ·  £4,200
Pending
VO-002
Design change – revised cable routes  ·  £2,750
Disputed
VO-001
Extended programme – site delay 14 days  ·  £1,800
Approved
Total approved variations £1,800
Variations - Submit variation requests and track approval status through to inclusion in applications
Subcontractor Portal - Retention
5%
Retention Rate – 5%
Half released on practical completion · Half on defects liability expiry
App 5 – Apr 2025
Certified £18,400  ·  Retention £920
Held
App 4 – Mar 2025
Certified £16,800  ·  Retention £840
Held
App 3 – Feb 2025
Certified £15,900  ·  Retention £795
Held
App 2 – Jan 2025
Certified £13,900  ·  Retention £460
Released (50%)
App 1 – Dec 2024
Certified £12,500  ·  Retention £312
Released (50%)
Total retention currently held £3,910
Retention - Full retention schedule showing held and released amounts per application
Explore the Subcontractor Portal

Part of Construct Software

One platform in a complete
building services software suite

ContractorApplications sits alongside a growing range of specialist tools from Construct Software - all designed for the UK electrical contracting and building services sector.

ContractorCompliance

Supply chain compliance management - document tracking, compliance scoring and contractor portal.

SafetyCert

Full compliance management - PAT testing, EICRs, Minor Works and document management across sites.

ElectraCert

BS 7671 test & certification - EICs, MWCs and EICRs compliant with A4:2026.

CableSpec Pro

Multi-circuit cable calculations for BS 7671 design work on projects of any scale.

InterimReport

Structured interim electrical safety inspections with locked PDF reports and secure client sharing.

FacilitiesMaster

Full-stack FM for planned maintenance, reactive jobs and asset management across portfolios.

More coming

The Construct Software suite grows regularly. New specialist tools added across the industry.


Common questions answered

Everything you need to know before getting started.

What is ContractorApplications?
ContractorApplications is a cloud-based SaaS platform for managing subcontractor payment applications. It allows principal contractors and main contractors to receive, assess and certify payment applications from their supply chain through a structured portal, replacing the email-based process. Subcontractors submit applications through their own portal, track certification status in real time and manage variations and retention from the same place.
Do my subcontractors need to pay for the portal?
No. The subcontractor portal is included in your subscription at no cost to you or your subcontractors. Subcontractors access the portal via a secure magic-link login - there is no separate licence or payment required from them. They simply click their invitation link, set up their company details and can begin submitting applications immediately.
How much does ContractorApplications cost?
ContractorApplications is priced per team, not per subcontractor, and every plan covers unlimited subcontractors. Standard is £2,580 a year and Professional £4,320 a year, billed annually and excluding VAT; Enterprise is priced to your requirements. The subcontractor portal is included at no extra cost. See the pricing page for what each plan includes.
How does retention work?
You set a retention percentage for each subcontract when you create it. When your team certifies an application, the platform automatically calculates and deducts the retention amount from the certified value. Retention is tracked cumulatively against the subcontract. You can record retention release events - for example, 50% on practical completion and 50% on expiry of the defects liability period - and subcontractors can see the full retention schedule in their portal.
How does the accounting integration work?
ContractorApplications integrates with Xero, QuickBooks Online and Sage Business Cloud. When your team certifies an application, the certified value, retention and net payment amount can be pushed directly to your accounting system as a purchase transaction or bill. This eliminates duplicate data entry and ensures your accounting records match the certified application amounts without manual re-keying.
Can a subcontractor work across multiple principal contractors?
Yes. A single subcontractor can be linked to multiple principal contractor accounts on the platform. Each customer relationship is entirely independent - different projects, different applications, separate messaging. Subcontractors access a customer switcher in their portal to move between the different principal contractors they work with. Each principal contractor only sees the subcontractor's applications for their own projects.
What happens to pay-less notice deadlines?
When a subcontractor submits an application, the platform calculates the pay-less notice deadline based on the payment terms set for the subcontract. Your commercial team receives automated reminders before the deadline approaches, giving you time to review the application and issue a pay-less notice if required. Deadline tracking is visible on the application dashboard so nothing is missed.
How is data protected?
All personal data - subcontractor names, contact details, financial records - is encrypted at rest using AES-256 encryption. Documents are stored encrypted and decrypted only in memory when accessed by authorised users. The platform is hosted on UK infrastructure and is designed to meet UK GDPR requirements. Every action is logged in a tamper-evident audit trail. Access is managed through the Construct Software identity system with session controls and periodic token regeneration.

Start managing payment applications properly

Structured applications.
Transparent certifications.

ContractorApplications gives your commercial team a live, structured view of every payment application in your supply chain - with a portal that puts submission and tracking in the subcontractors' hands, not your inbox.

Get Started Explore the Portal
Part of the Construct Software suite  ·  UK-hosted  ·  AES-256 encrypted