Flow
Sign InStart for Free
Background
Designed for UK Freelancers

The Invoicing Tool Built for Freelancers and CIS Contractors

Stop wrestling with generic software. Automate HMRC-compliant invoices, track payments, and sort your taxes in seconds.

ICO Registered
HMRC Compliant
GDPR Compliant
Create Your First Invoice

No credit card required

Stripe LogoPowered by Stripe
Features

Everything you need to get paid

From creation to payment, we've got every step of your invoicing workflow covered.

Create invoices in seconds

Professional templates

Choose from beautiful, customisable templates

Automatic calculations

Tax, discounts, and totals calculated automatically

Custom branding

Add your logo and brand colors

Create invoices in seconds

Join hundreds of other freelancers

Trusted by freelancers and contractors to process over

£226100

in revenue

Trusted Integrations

We integrate with the most popular payment processors to make it easy for you to get paid.

Stripe logo

Stripe

Get paid directly into your Stripe account

PayPal logo

PayPalComing Soon

Get paid directly to your bank account

Dodo Payments logo

Dodo PaymentsComing Soon

Secure payment processing

Always Up-to-Date with HMRC Regulations

We keep our compliance rules current with the latest HMRC requirements

Last Updated

1 January 2026

HMRC compliance rules

HMRC Compliant

Tax regulations

CIS deductions & VAT

ICO Registered

Data protection

GDPR compliant

Made in the UK, for the UK

Built for UK Freelancers & CIS Contractors

Everything you need to invoice correctly, without the paperwork headache

Built-in CIS compliance
UK tax calculations
GDPR compliant
HMRC-ready reporting
Testimonials

Loved by freelancers and small businesses

See what our users have to say about their experience with Flow Invoicing.

Why freelancers choose Flow

Save 90% of your time

Create invoices in 2 minutes instead of 30. Spend more time on billable work.

With Excel30 min
With Flow2 min
Get paid 3x faster

One-click payments and smart reminders mean faster cash flow for your business.

With Manual Invoicing45 days
With Flow15 days
Look professional

Beautiful, branded invoices that make you look like the pro you are.

Brand completeness40%
With Flow100%
Pricing

Simple, transparent pricing

Start free, upgrade when you're ready. No hidden fees.

Stripe LogoPowered by Stripe
Become a Founding Member

Get Exclusive Early Access

We've given a limited number of founding users free lifetime access in exchange for product feedback and visibility. Spaces are currently full - please check back later for new opportunities.

JM
James MacArthur
The Web 4 Less
We are proud to have joined Acertine and are currently using Flow within our business. We look forward to helping it grow and improve to provide a much needed and long disregarded need in the UK for the SME and Freelance market.
Meet Current Members
Limited spaces available
Free lifetime access
No credit card required
Lifetime Free Access
Get free lifetime access to Flow Invoicing - no subscription fees, ever. All premium features included.
VIP Member Badge
Display your exclusive VIP badge on your profile and invoices, showing your status as a founding member.
Public Credit
Be featured on our founding users page with your name, bio, and social links. Get recognition for being an early supporter.
VIP Support Access
Get priority support with faster response times and direct access to our team for any questions or issues.
Early Access to Features
Be the first to try new features and updates before they're released to the public. Your feedback shapes our roadmap.
Direct Product Influence
Your feedback directly influences product development. Help us build the best invoicing tool for freelancers.
FAQs

Frequently asked questions

View all FAQs

Ready to get paid faster?

Join thousands of freelancers who've already made the switch to effortless invoicing.

Find Out MoreStart for Free

14-day free trial • Cancel anytime

Mailing List

Stay Updated

Get the latest updates, tips, and features delivered to your inbox.