Finance

The month-end close, with the variances already explained

Castia Finance handles invoices, approvals, budgets, and reporting — on an AI that reads every document, reconciles the numbers, and writes the commentary for you.

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Open source · Free to start · Pay only for usage

The challenge

What this looks like today

Month-end is a week of manual reconciliation and copy-paste.

Invoice data gets keyed in by hand, and the errors surface in the audit.

"Why is this line 30% over budget?" takes two days to answer properly.

The spend is approved in email and recorded nowhere.

The product

Everything you'd expect from Castia Finance

The features you'd want from any tool in this category — because this is a product, not a plugin.

Invoice & expense management

Capture, code, and approve invoices and expenses with a full audit trail on each one.

Approval workflows

Route spend by amount, department, and policy — with escalation and delegation built in.

Budgets & forecasting

Budget by cost centre, track actuals against plan, and roll forward a forecast that reflects reality.

Management reporting

P&L, cash flow, and cost-centre reporting on the schedule your board expects.

Audit trail & controls

Every approval, edit, and posting recorded — segregation of duties enforced, not assumed.

…and everything you can’t get anywhere else

Castia Finance is built on the Castia platform — so enterprise search, knowledge AI, reporting, workflow automation, and agents all apply directly to your work.

Invoice intelligence

Read any invoice in any format, extract the lines, match it to the PO, and flag the ones that don't reconcile.

Variance commentary

Not just the number — the paragraph explaining why the line moved, drafted from the underlying transactions.

Ask your ledger

"What did we actually spend on cloud infrastructure last quarter, across every entity?" — answered with the transactions behind it.

Reconciliation agents

An agent that works the exceptions overnight and leaves you the ones that genuinely need a human.

Find the contract behind the cost

Tie a recurring charge back to the contract clause that created it, in one query.

One AI layer, thirteen products. See the whole platform

In practice

From question to finished work

Ask in plain language. Castia does the reading, the reconciling, and the drafting.

You ask

Explain the variances in this month's P&L.

Reads the ledgerCompares to budgetTraces each varianceDrafts the commentary

Castia delivers

Every material variance explained in a sentence, each linked to the transactions that drove it — including the £40k overrun traced back to a single unapproved contract renewal.

Outcomes

What changes

Close the month in days, not weeks

Invoice data extracted, not typed

Variances explained automatically, with the evidence

Every approval on the record, none in someone's inbox

Audit-ready by default rather than by scramble

Connectors

Connects to the systems you already run

Castia Finance reads from the tools your team already uses — no migration required.

XeroQuickBooksSageNetSuiteSQL databasesExcel & SheetsGmail & OutlookSharePoint

Open source

Open source. Free to start. Pay only for what the AI does.

Finance systems bill per user, so the budget holders who actually incur the spend never get access to their own numbers. Castia bills for usage — give every cost-centre owner their line, without buying thirty seats.

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