The most complete job invoicing software for UK field service businesses. Create invoices in one click from completed jobs, send branded PDFs, track payments, issue credit notes, generate customer statements, and sync to your accounting system automatically. From the first work order to the final payment — it's all in Field Ascend.
Built for field service management software UK needs — including full Domestic Reverse Charge (DRC) and CIS deduction support for UK contractors. Mobile job data flows straight into invoicing. One platform. Every invoice. Zero double-entry.
30-day free trial • UK-based support
Field service invoicing software turns completed work orders and job sheets into professional invoices — without re-keying data. Your engineers capture labour, materials and notes on the mobile app while on site; the office creates an invoice from that data in one click.
Field Ascend connects every step of your invoice lifecycle — the complete work order to invoice workflow. Jobs flow straight into invoices with no re-keying, no lost data and no wasted time.
Field Ascend's invoice management for field service is built for UK contractors and maintenance businesses who need to move quickly from completed job to paid invoice — without chasing spreadsheets.
As contractor invoicing software built for the UK market, Field Ascend auto-builds your invoice directly from the job sheet. Labour times, materials used, and miscellaneous charges are all pulled through automatically — ready to review and send.
Optionally copy the job description and work-done notes onto the invoice. Lock the price from an accepted quote — customers can accept quotes online via email with one click. Invoice partial percentages for staged payments. All with zero double-entry.
Every invoice generates as a pixel-perfect PDF via AWS EC2 Puppeteer (headless Chrome). Your logo, colours, fonts, and layout — exactly as designed. Customers receive polished, professional documents that reflect your brand.
Build templates using the drag-and-drop canvas designer or the quick simple builder — no design skills needed. Set a default, or pick a template per invoice. Preview thumbnails make selection easy.
Invoice emails are sent via an AWS SQS + Lambda queue — your browser never waits. Click Send and you're done instantly. The system handles delivery in the background, with full retry logic and error reporting.
Email invoices individually or bulk-email hundreds at once from the invoice list. Every send is logged in a full communications history per invoice — ideal for chasing overdue payments and resolving disputes.
Mark invoices paid with a single click, recording the exact payment date. Field Ascend automatically flags overdue invoices when the due date passes — no manual chasing needed. Always know exactly how much is outstanding and who owes what.
Field Ascend includes a complete credit note module that mirrors every feature of the invoice system. Raise credits, link them to specific invoices, email them to customers, and sync to your accounting system — all in the same familiar interface.
Raise credit notes linked to specific invoices. Credits reduce the customer's balance and create a clean audit trail. Link credits and invoices in the lifecycle flowchart for full visibility.
Separate canvas-based PDF template system for credit notes — same builder, same quality. Set a default or select per credit note. Preview thumbnails included.
Email credit notes individually or in bulk. Full communications history per credit note — same queue-based AWS delivery as invoices. No separate system to manage.
Credit notes posted to Xero, QuickBooks, Sage, FreeAgent and Zoho Books in one click. Posted status prevents double-posting. Bulk post from the list view.
Deleted credit notes go to a recycle bin with full restore capability. Nothing is lost accidentally. Purge permanently only when you're certain.
Bulk delete, bulk email, and bulk post to accounting. Manage your entire credit note backlog efficiently from one view with column filtering and sorting.
Generate outstanding or date-range activity statements for any customer — complete with aging analysis, totals, and a full invoice list. Send directly to the customer by email from Field Ascend, or download as a PDF.
Statement templates use the same canvas-based PDF builder as invoices — your branding, your layout. The statement system pulls live data including credit note offsets and calculates the true balance due automatically.
Field Ascend is the only service management software for contractors that handles both Domestic Reverse Charge and Construction Industry Scheme deductions natively — no workarounds, no manual adjustments. Just set it up and it works.
DRC transfers VAT accountability from the supplier to the customer — mandatory for construction and building services businesses registered for the Construction Industry Scheme. Field Ascend handles the entire DRC workflow automatically.
CIS requires contractors to deduct tax at source from subcontractors' payments — typically 20% or 30%. Field Ascend automates the calculation, displays the balance due, and passes CIS deductions correctly to all accounting integrations.
Both features include cascading defaults: set once at the tenant level, override at the customer level, or override again on any individual invoice. Data is preserved safely even if you later disable the feature globally.
Below is how a typical invoice changes when Domestic Reverse Charge or CIS applies. Field Ascend calculates these automatically — the correct figures appear on the PDF and are posted to your accounting system.
| Line | Standard Invoice | With DRC | With CIS (30%) |
|---|---|---|---|
| Net Total | £1,000.00 | £1,000.00 | £1,000.00 |
| VAT (20%) | £200.00 | £0.00 * | £200.00 |
| CIS Deduction | — | — | −£300.00 ** |
| Amount Due | £1,200.00 | £1,000.00 | £900.00 |
* DRC: VAT is not charged on the invoice. The customer accounts for VAT to HMRC under reverse charge rules. A notice is printed on the PDF automatically.
** CIS: The customer deducts 30% of the net value (£300) and pays it to HMRC on the subcontractor's behalf. The deduction is posted as a negative line item to your accounting system.
Values are illustrative only.
Connect Field Ascend to your accounting system and eliminate double-entry forever. Post invoices, credit notes and customer data directly — with DRC, CIS and tax mappings handled automatically.
Post any invoice to your accounting system directly from the invoice editor or invoice list. Bulk post multiple invoices at once — Field Ascend skips already-posted invoices automatically.
Every invoice tracks its "posted" status per integration. Posted invoices are clearly flagged. Un-post if needed with a clear warning to void the matching entry in your accounting system.
Map labour, materials, and miscellaneous line items to your accounting nominal codes per integration. Tax rate mapping ensures VAT is posted correctly every time.
Secure OAuth2 connections with automatic token refresh — you'll never be asked to re-authenticate unexpectedly. Webhooks keep your data in sync in near real-time.
DRC invoices post with the correct zero-rate tax type per accounting system. CIS deductions post as negative line items. No manual adjustments needed in Xero, QuickBooks, Sage, FreeAgent or Zoho.
All integrations managed from one screen — connect, configure, map accounts, test the connection, and disconnect cleanly. Full visibility of sync status across all linked systems.
For maintenance management software UK users, Field Ascend includes a dedicated PPM invoicing queue that shows every maintenance contract with invoices due. No more end-of-month scramble to work out what to bill.
Supports all billing frequencies and timing modes — monthly in advance, quarterly in arrears, annually, and more. Generate invoices individually or in bulk for the entire queue, then email or post to accounting in one go.
Allocate a percentage of each invoice's net value to one or more staff members. Per-staff commission rates, approval workflows, and a full lifecycle from pending to approved. Commission data stays confidential — not visible on the invoice itself.
Bulk delete, bulk email, and bulk post to accounting from the invoice list. CSV export respects your current filters and visible columns — ideal for finance reviews and reconciliation. Customisable visible columns with saved preferences per user.
Deleted invoices go to a recycle bin with full restore capability. Restore also re-links associated credit notes. Permanently purge only when certain. Nothing important is ever lost accidentally.
Per-invoice currency code inherited from the job or customer. Currency symbol displayed correctly across invoices, PDFs, and accounting integrations. Essential for UK businesses serving international clients.
Every invoice links visually to its source job, quote, purchase order, and credit notes in the lifecycle flowchart. Click any node to navigate instantly. Full audit trail for accountant reviews and customer disputes.
Configure default payment terms, invoice prefix, sequential numbering, credit note prefix, VAT defaults, DRC/CIS defaults, category-based labour exclusion rules, and per-tenant feature flags. Every setting is per-tenant for complete isolation.
From HVAC contractors needing CIS-compliant invoicing to lift maintenance companies managing large PPM contracts — Field Ascend's invoicing module adapts to your industry.
Field Ascend is contractor invoicing software UK businesses can rely on for HMRC compliance. CIS deductions, Domestic Reverse Charge, audit-ready comms history, credit notes, customer statements and accounting integrations are all included as standard — not bolt-on extras.
Join UK field service businesses already using Field Ascend to invoice faster, eliminate double-entry, and stay compliant with DRC and CIS. Your first 30 days are completely free.
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