#1 PickAI-native
Keeper Tax
4.6Paid
- AI-powered automatic expense detection from bank transactions
- 1099 contractor and Schedule C tax filing
Best for: Solo practitioner
Best FIZ Alternatives in 2026
Compare 10 alternatives to FIZ for tax preparation & compliance
Last updated April 2026
Why look for FIZ alternatives?
- Portugal-only with no crossover utility — any practitioner or client outside the Portuguese tax regime gets nothing from this tool.
- Sole traders and independent professionals only — no firm-level features, no client workspaces, no team seats for accountants managing multiple filers.
Top Picks
#2 PickTraditional
TaxScouts
4.6From $119/mo
- Self-assessment tax return filing
- Certified accountant review and submission
Best for: Solo practitioner
#3 PickTraditional
IRS Direct File
4.6Free
- Direct IRS e-filing without intermediaries
- Free federal tax return preparation
Best for: Solo practitioner
Quick Comparison
All FIZ Alternatives
Keeper Tax
4.6AI tax filing and bookkeeping for freelancers and self-employed professionals
AI-nativeSolo practitionerInstant signup15+ integrations
Keeper connects to your bank accounts, credit cards, PayPal, Stripe, and Venmo, then scans every transaction throughout the year looking for Schedule...Read more →
- AI-powered automatic expense detection from bank transactions
- 1099 contractor and Schedule C tax filing
- Quarterly estimated tax calculations with reminders
PaidFree plan
vs FIZ: More advanced AI capabilities (AI-native vs AI-enhanced)
TaxScouts
4.6UK online tax return service using certified accountants.
TraditionalSolo practitionerInstant signup
TaxScouts handles UK self-assessment filing through a handoff model: the taxpayer completes an online questionnaire covering income sources,...Read more →
- Self-assessment tax return filing
- Certified accountant review and submission
- HMRC-compliant tax return processing
From $119/mo
vs FIZ: Higher rated at 4.6/5 vs 4.1/5
Free tax filing tool directly from the IRS.
TraditionalSolo practitionerInstant signup
IRS Direct File lets eligible taxpayers prepare and e-file a federal return directly with the IRS at no cost, with no TurboTax, H&R Block, or other...Read more →
- Direct IRS e-filing without intermediaries
- Free federal tax return preparation
- Guided tax form completion
FreeFree plan
vs FIZ: Higher rated at 4.6/5 vs 4.1/5
TaxJar
4.5AI-powered sales tax automation for e-commerce businesses
AI-enhancedAny sizeLight setup50+ integrations
TaxJar calculates US sales tax at checkout, files returns in every state where you have nexus, and alerts you when you cross economic nexus...Read more →
- Automated sales tax calculation across 14,000+ US jurisdictions
- AI-powered product taxability determination
- Auto-filing tax returns in all required states
FreemiumFree plan
vs FIZ: Strong integration ecosystem with Stripe, Shopify
Agentic AI tax workflow that automates the gather-and-prepare steps
AI-enhancedMid-size firm (11-50)Implementation required10+ integrations
Ready to Review is an agentic AI tool built into Thomson Reuters tax workflows that automates the gather-and-prepare phase of return production. The...Read more →
- AI-powered workpaper review and error detection
- Automated quality control for tax documentation
- Missing procedure identification
Custom Pricing
vs FIZ: Strong integration ecosystem with Thomson Reuters UlaTax, Thomson Reuters GoSystem
Avalara
4.6Cloud-based tax compliance automation for businesses of all sizes
TraditionalEnterprise (50+)Implementation required300+ integrations
Avalara connects to your e-commerce platform, ERP, or accounting software via API and calculates the correct sales tax at the point of sale across...Read more →
- Real-time tax rate calculation across thousands of jurisdictions
- Automated sales tax filing and remittance
- Multi-state and international VAT compliance
Custom Pricing
vs FIZ: Strong integration ecosystem with QuickBooks, Xero
Comprehensive tax research platform from Wolters Kluwer.
TraditionalMid-size firm (11-50)Light setup
CCH AnswerConnect is Wolters Kluwer's flagship tax research database. Day-to-day, it means searching the full federal and state tax code, reading...Read more →
- Federal and state tax code research
- Tax law analysis and commentary
- Primary source tax documents access
Paid
vs FIZ: Better fit for Mid-size firm (11-50)
Sovos
4.6Global tax compliance and reporting platform.
TraditionalEnterprise (50+)Enterprise deployment50+ integrations
Sovos handles VAT determination, e-invoicing submission, and tax reporting filings across 70+ countries from a single platform. Day-to-day, it...Read more →
- Global VAT compliance automation across 70+ countries
- Real-time e-invoicing with regulatory compliance
- Automated tax determination and calculation
Custom Pricing
vs FIZ: Strong integration ecosystem with SAP, Oracle ERP
eFile360
4.51099 e-filing service with TIN matching and solicitation.
TraditionalSmall firm (2-10)Light setup10+ integrations
eFile360 handles bulk 1099 e-filing directly with the IRS and participating state agencies, with TIN matching built into the pre-submission workflow....Read more →
- Automated 1099 e-filing with bulk processing
- TIN matching and verification to prevent penalties
- W-9 solicitation management
From $2/mo
vs FIZ: Strong integration ecosystem with QuickBooks, Excel
Simple, free invoice generator for freelancers.
TraditionalSolo practitionerInstant signup
MakeMyInvoice generates a PDF invoice in under two minutes without requiring an account. You fill in client details, line items, currency, and tax...Read more →
- Professional invoice template generation
- Multi-currency invoice creation
- PDF invoice export
FreeFree plan
vs FIZ: Higher rated at 4.5/5 vs 4.1/5
How We Chose These Alternatives
We evaluate AI accounting tools across multiple dimensions: feature depth, pricing transparency, integration ecosystem, user ratings, and vendor stability. The alternatives listed here share the same primary category as FIZ and are actively maintained. Tools are ranked by user ratings and review volume. We update this page as new tools enter the market and existing ones evolve.