Invoicing for engineers
Simplified electronic invoicing built for engineers working in Spain. Verifactu-compliant from day one.
No credit card required. Free tier available forever.
Why engineers choose k-factu
Handles multiple IVA rates per invoice — general 21%, reduced 10%, super-reduced 4%
Automatic IRPF withholding calculation — 15% standard or 7% for new autonomos
Full Verifactu compliance with hash-chained invoices and QR codes for AEAT
Common deductible expenses
Software licenses and subscriptions
Business travel and accommodation
Professional training and courses
Start invoicing as a engineers today
Join freelancers across Spain who trust k-factu for their invoicing needs.
Start free