The AI that knows
Spanish tax law
Designed for Spanish tax advisory
Up-to-date tax corpus: LGT, LIRPF, LIS, LIVA, DGT rulings and TEAC criteria.
Tax research with verified citations
Query tax legislation, DGT rulings, TEAC resolutions and Supreme Court doctrine in seconds. Lexiel cites the exact source and resolution number.
Tax report and document drafting
Generate drafts of tax appeals, arguments, binding consultations and tax planning documents adapted to the LGT and current tax regulations.
Integrated tax calculators
Direct access to municipal capital gains (IIVTNU), self-employed quota (RETA), tax default interest and fiscal debt limitation calculators.
Tax deadline management
Alerts for tax return filing deadlines, tax limitation periods (4 years LGT), appeals and economic-administrative claims.
DGT library and tax doctrine
Updated corpus of DGT binding consultations, TEAC criteria and Supreme Court tax jurisprudence.
GDPR and professional secrecy
Client data and case files on European servers. Firm-restricted access. Compliance with the tax advisor's duty of confidentiality.
How Lexiel works with your firm
Create the client and case file
Register client data, tax year and matter type (income tax, corporate, VAT, appeals). Lexiel auto-classifies the tax area.
Research with AI
Ask about any tax question: deductions, applicable rates, DGT criteria, Supreme Court case law. Lexiel responds with verified citations.
Draft and attach documents
Upload declarations, notices and minutes to the file. Ask questions about the specific content of each document.
Track deadlines and issue invoices
Expiry alerts, case timeline and native VAT/income tax invoicing. VeriFactu-ready.
Is Lexiel right for your firm?
“VeriFactu had us all terrified until we used Lexiel. Every invoice is signed with a SHA-256 hash and the QR is verifiable at AEAT in seconds. Full compliance without technical complexity.”
R.I.P., Tax Advisor, Tax Law, Zaragoza
From €69 per month
Full tax + legal corpus. CRM, deadlines, VeriFactu billing and client portal. No case file limits.
Use code LEX-FISCAL for 3 months free on the Professional plan.
See the product in action
Try before you subscribe
This is the Lexiel workspace. No sign-up, no credit card.
The law firm of the future, today
Verified case law, briefs in minutes, organized case files. All in one place.