For defence technology, robotics and engineering businesses.
Defence accounting software for multi-entity teams
Build forward. Keep finance close.
From the first programme to an international operation, your finance team needs to see where the money goes and how each decision reached the books. Light connects supplier spending, programme dimensions and entity reporting, giving the next stage of growth a financial foundation.
Book a demoClear records.
Confident decisions.
Chosen by Biofire
The financial foundation
How do you keep programme costs connected to the books?
Defence accounting software helps finance teams record spending, control approvals and report across the projects and entities behind a defence business.
Engineering moves through milestones. Finance needs to understand the supplier spend and operating costs behind them. Light keeps that financial context on the transaction, ready for the team deciding what happens next.
- 01
Follow programme spending
Use custom properties to tag bills and entries by programme, project or cost centre. Make key dimensions mandatory and report on recorded costs, with a path from the report to the ledger lines behind it.
Explore reporting - 02
Give approvals a clear route
Set bill approval rules using the entity, supplier, amount or custom properties. Keep supplier onboarding and bank-detail changes in an approval workflow too. Your team sets the authority; Light routes the work.
Explore approval workflows - 03
Keep a record of corrections
When the accounting details on a posted bill change, Light reverses and re-posts the entries. Finance can inspect the full ledger history, including voided postings, and close periods by entity after review.
Explore the ledger - 04
Bring the group together
Manage entity and group reporting currencies in the same platform. Intercompany journals use configured account rules and post eliminations into consolidated reporting, giving finance a shared view as the organisation expands.
Explore consolidation
How does supplier spending reach the right programme?
Build the control into the daily work, while the people closest to the purchase still have the context.
- 01
Record the purpose
Light reads the supplier invoice into a draft. Your programme and cost-centre properties give the bill its financial context.
- 02
Apply the approval rules
Route the bill to the right reviewer. Keep human approval for decisions such as supplier bank changes and employee reimbursements.
- 03
Review the result
Trace recorded programme costs through reports and ledger entries. Finance reviews exceptions and closes each entity's period when ready.

Biofire / Manufacturing
What does connected finance look like at Biofire?
“Our manufacturing systems pull live cost data straight from the ledger, so production never waits on finance to catch up.”
Biofire's published manufacturing example shows how its team connects operational systems with Light. Explore the workflow in the existing use case.
See Biofire's use caseHow does Light fit your engineering systems?
Your teams already have tools for design, production and delivery. Light's open API gives you a way to connect financial data with those systems. The setup starts with your programme structure, the data that needs to move and the controls around each connection.
Bring your contract, reporting and security requirements to the evaluation. We'll demonstrate the finance workflows and scope the integrations against your actual operation.
Questions, answered
What should defence finance teams know?
Can Light report costs by programme or project?
Yes. Custom properties let finance tag bills and accounting entries with programme, project and cost-centre values, then use them in reports. The team defines the dimensions and any allocation method during setup. More specialised contract costing needs its own scope.
What evidence does Light retain when a bill changes?
Changing the accounting details on a posted bill reverses and re-posts the entries. The full ledger view and export include voided postings, so reviewers can follow the accounting history. Changing only a custom property does not create a new accounting posting.
Does Light replace our manufacturing or engineering software?
Light provides the accounting and finance foundation. Engineering, manufacturing and delivery systems can continue to handle their specialist work, with API integrations scoped around the financial data the business needs to exchange.
How should we assess defence contract and security requirements?
Map your contract terms, cost treatments, reporting obligations and data requirements before choosing the setup. Light's Trust Center provides security documentation for review. Sector-specific requirements need an explicit assessment with your team; a general accounting workflow does not establish that fit.
Can the finance team control what automation does?
Light supports bill-processing instructions, reconciliation rules and configurable approval workflows. Finance sets the routing and keeps people in the decisions that need judgement, including reimbursement approvals and supplier bank-detail changes.
What would you like to explore next?
Keep finance ready for what you build next.
Bring a programme, a supplier workflow and your reporting requirements. Let's put Light against the work your team needs to do.
Book a demo