Resources
Resources for solo accountants and small firms
Free tools, in-depth guides, and honest comparisons. Built for firms of 1-5 people who want to run a practice without paying enterprise prices.
Free tools
No signup required. Use them in your firm today.
Free Invoice Template
Professional, multi-currency invoice template. GDPR-compliant, customisable.
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Engagement Letter Template
Free accountant engagement letter for UK and EU firms. Ready for e-signature.
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Hourly Rate Calculator
Calculate your ideal hourly rate based on income goals, billable hours, and tax.
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Project Quote Generator
Build a professional project quote in minutes. Multi-currency, ready to send.
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VAT Calculator
Calculate VAT for UK, NL, DE, FR, ES, and other EU countries. Add or reverse VAT.
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Profit Calculator
Calculate your firm’s monthly profit, margin, and per-client profitability.
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Savings Calculator
Estimate how much you save by replacing 5 tools with FirmFlow.
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Guides & insights
In-depth articles on running a small accounting, law, or consulting firm.
Best Practice Management Software 2026
Honest comparison of the top 8 platforms for small accounting and law firms.
How to Choose Practice Management Software
A decision framework: feature checklist, pricing models, what actually matters.
How Firms Save €200+/Month on Practice Management
A 5-person firm spends €370/month on 5 tools. Here’s how to cut that by 80%.
Replace 5 Tools with 1 Platform
Why most small firms use too many tools and how consolidation works in practice.
When You Have Outgrown Spreadsheets
Signs your firm needs proper practice management software — and what to do next.
How to Set Up a Client Portal for Your Firm
A step-by-step guide to giving clients a branded portal in under an hour.
What Is a Client Portal?
A guide for professional firms: features, benefits, and what clients expect in 2026.
Are E-Signatures Legally Binding?
UK and EU legal guide: eIDAS, ESIGN Act, audit trails, and best practices.
Legally Binding E-Signatures Guide
When standard e-signatures suffice and when you need advanced or qualified ones.
How to Send E-Signatures for Free
No DocuSign needed: send legally binding e-signatures without paying per envelope.
DocuSign Alternative for Professional Firms
Why firms switch from DocuSign and what to use instead.
FirmFlow vs Competitors
A side-by-side comparison: pricing, features, and ideal customers.
Comparisons
Honest side-by-side comparisons with the platforms small firms actually evaluate.
By profession
Tailored pages with use cases and workflows for each profession.
Ready to switch?
Replace 5 tools with 1 platform
FirmFlow gives you documents, e-signatures, time tracking, invoicing, and a client portal — for €29/month flat. No per-user fees.