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SaaSAccounting 20 weeks United Kingdom

FinLedger

AI bookkeeping and tax automation for UK small businesses

2K+

Small Businesses

100K+

Transactions / month

95%

Auto-categorisation Accuracy

80%

Bookkeeping Time Saved

The Challenge

UK small businesses were spending 5+ hours per week on bookkeeping and paying accountants thousands annually for basic tax filing. The founders needed an AI-first accounting tool that auto-categorises transactions, handles MTD (Making Tax Digital) VAT filing, and generates tax-ready reports — making accountants optional for basic compliance.

The Solution

Ubikon built a Next.js accounting platform with Plaid for automatic bank feed ingestion, GPT-4 powered transaction categorisation (95% accuracy), double-entry ledger with real-time P&L and balance sheet, HMRC MTD API integration for one-click VAT filing, and Stripe billing for the SaaS subscription layer.

How We Built It

1

Accounting Engine

Double-entry ledger design, chart of accounts, multi-currency support, financial statement generation.

2

Bank Integration

Plaid Open Banking API for automatic bank feeds, transaction deduplication, reconciliation engine.

3

AI Categorisation

GPT-4 transaction classifier trained on UK accounting categories, learning from user corrections.

4

Tax Module

HMRC MTD API integration, VAT calculation engine, quarterly filing automation, Corporation Tax estimates.

5

Launch

Beta with 100 businesses, accountant partner programme, ICAEW endorsement, public launch to 2K+ businesses.

"FinLedger categorises my transactions with 95% accuracy and files my VAT returns in one click. I used to spend 5 hours a week on bookkeeping — now it is 30 minutes. Ubikon built an AI accounting tool that actually works."
ER

Emily Richardson

Founder, FinLedger

Tech Stack

Next.jsNode.jsPostgreSQLOpenAI APIPlaidStripeAWS

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