Free Invoicing Software for UK Small Businesses

Create invoices, send reminders, track payments.

All in one place with Refrens.

Our Users Rate Refrens ⭐ 4.8/5 based on 11700+ Ratings
Free Invoicing Software for UK Businesses

Billing Software & Online Invoicing in the UK​

Effortlessly create, customise, and track invoices with Refrens. All-in-one invoicing solution built for UK businesses. Send invoices in one click, automate payment reminders, manage taxes, and download reports, all from a single platform.
Billing Software & Online Invoicing in the UK
Generate VAT-compliant invoices, maintain clear financial records, and access real-time insights into your business performance. Track expenses and inventory instantly with automation and smart reminders. Refrens simplifies invoicing, quotations, inventory, delivery notes, and more on a single platform trusted by businesses.

Advanced Features of Our Invoicing Software in the UK

Free Billing Software – Professional Invoices
Free Billing Software – Professional Invoices

Create fast, professional invoices in seconds with Refrens.

✅ Invoice formats compliant with UK VAT and HMRC rules

✅ Multiple ready-to-use invoice templates

✅ Instantly share via email, WhatsApp, or download as PDFs

User Roles & Permission - Online Invoicing Software
User Roles & Permissions

Secure your business data while empowering your team.

✅ Assign roles like admin, accountant, or sales

✅ Set access levels for each user

✅ Track changes with audit logs

✅ Ensure full visibility and control

Inventory Management Software - Free Billing Software
Smart Inventory Management

Keep your inventory up to date—no spreadsheets required.

✅ Real-time stock tracking across warehouses or stores

✅ Identify your best-selling products

✅ Receive automated low-stock alerts

✅ Monitor item movement across UK locations

Easy and Simple - Online Billing Software
Simple & Affordable

No training required—get started easily.

✅ Intuitive and user-friendly interface

✅ Perfect for freelancers, small businesses, and sole traders

✅ Free trial with zero commitment

✅ Available on Android & iOS app stores in the UK

Recurring Invoice - Online Billing Software
Easy Recurring Invoices

Automate regular billing with ease.

✅ Ideal for subscriptions or retainers

✅ Set billing frequency and reminders

✅ Save time and improve payment consistency

Key Features of Refrens Online Invoicing Software

Send WhatsApp and Email
1-click WhatsApp & Email SharingQuickly share Quotations & Invoices over WhatsApp/email or schedule for later.
Track Invoices
Track InvoicesTrack when your clients view your Invoices sent over email.
Auto Assistant
Auto-assistanceSystem will automatically fill 80% of the details for you based on your past documents. Reduce manual efforts & save time
Easy Customization
Branding & CustomizationChoose from multiple templates, fonts, colors, etc. Completely customizable according to your business needs.
1 Click Conversion
1-Click ConversionSave time & effort by auto converting a quotation into an invoice, an invoice into a credit/debit note, and more.
Track Invoices
Automated Payment RemindersGet paid faster by sending automated reminders to clients over WhatsApp & email.
Multiple Business & Team Members
Multiple Businesses & Team MembersSeamlessly manage multiple business. Add your team members & accountant. Control access levels with Roles & Permissions.
Ledger Account Groups
Ledgers & Account GroupsRecord & categorize transactions, easily track individual account balances
GSTR Reports
Balance Sheet and P&L ReportGet a clear view of your business’s financial health & profitability.
Create GST Invoices
InvoiceCreate fully customised VAT/Non-VAT Invoices in seconds - assisted by automation.
Proforma Invoice
Proforma InvoiceProvide a clear estimate of cost to your clients without initiating the transaction.
Send Quotations and Invoices
Credit/Debit NotesEasily rectify invoicing errors by creating credit or debit notes in seconds.
Quotation & Estimate
Quotation & EstimatesCreate attractive quotations & estimates instantly - share & track when clients view them.
Purchase Order
Purchase OrderQuickly process purchase orders to manage inventory refills.
Sales/Purchase Orders
Sales OrdersGenerate sales orders effortlessly to streamline your order processing.
Expense Management
Expense ManagementRecord & track all your expenses in one place - keep an eye on profitability.
Delivery Challan
Delivery ChallanInstantly create delivery challan for the transported goods.
Payment Receipt
Payment Receipt Instantly create & issue Payment Receipt for advance or full payment received.
Inventory Management
Inventory ManagementAuto-update inventory whenever you create an Invoice or expense. Track stock levels, avg. selling price, and more.
Convenient Sharing Options
Convenient Sharing OptionsShare Purchase Orders over Email, WhatsApp, and other platforms. Share as a link, PDF, or print.
Client Management
Client & Vendor ManagementEfficiently manage all your client & vendor information in one place.
Bookkeeping
BookkeepingCreate & manage ledgers, vouchers, and account groups. Generate income statements, balance sheets, trial balances, and other reports.
Bulk Upload
Bulk UploadUpload your past Invoices & client details in bulk to save time & manual efforts.
Essentials Reports
Comprehensive ReportsAutomatically generate reports for Invoices, Payments, Clients, TDS, VAT, and more in one click.
Multi-currency Invoices
Multi-currency InvoicesCreate Invoices in different currencies. Easily track forex gain or losses.
Easy Access Anywhere
Access Anytime AnywhereEasy to use across any device & any place. Completely reliable with the highest up-time.
Quote to Invoice
Convert Quote to InvoiceEasily convert your quotes to invoices with just a click which ensures a smooth transition from quote to payment, saving you time and effort.

Comprehensive Accounting & Reporting for UK Businesses

Advanced Accounting - Online Invoicing Software
Advanced Accounting

Keep your books accurate and HMRC-ready.

✅ Manage ledgers, journals, and vouchers

✅ Generate Balance Sheet, Profit & Loss, and Trial Balance

✅ Monitor cash flow, receivables, and payables

✅ Simplify tax and year-end reporting

Share Invoice via Email, WhatsApp and PDF
Convenient Invoice Sharing Options

Send invoices the way your clients prefer.

✅ Share via WhatsApp, email, or secure links

✅ Download print-ready PDFs

✅ Get notified when invoices are viewed

Free Billing Software - Bulk Upload
Bulk Upload Support

Handle large volumes of data with ease.

✅ Upload multiple invoices or client records in bulk

✅ Manage everything from a single interface

Multi Currency Support - Online Invoicing Software
Multi-Currency Invoicing

Bill global clients with no hassle.

✅ Send invoices in GBP, EUR, USD, and more

✅ Automatic currency conversion for smooth international invoicing

Easily Convert Quote to Invoice
Seamless One-Click Conversions

Skip the copy-paste—let Refrens handle the workflow.

✅ Convert quotes into invoices in one click

✅ Generate receipts or credit notes from invoices

✅ Record expenses directly from purchase orders

Security & Data Backup - Online Billing Software
Security & Data Backup

Your data is safe, secure, and always backed up.

✅ Cloud-based with bank-grade encryption

✅ Automatic backups and system monitoring

✅ Role-based access control to prevent data breaches

Supercharge your invoicing process starting with 0£Get Started for FREE

Pricing of Invoicing Software

Only Pay When You Need Premium Features.
Refrens Free Plan
Free PlanAll of our premium features are available on a free trial. Experience what all Refrens has to offer without making any payment!
Refrens Premium
Premium PlanManage your accounting at faster pace with additional premium features at minimal cost.
Refrens Invoicing Software
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All-in-one invoicing software for your business is now free.
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Frequently Asked Questions (FAQ)

Online Invoicing Software on Refrens is Free for 15 documents a year. You can create invoices, quotations, and other documents and manage your expenses anytime.

Yes, Refrens Online Invoice Software supports recurring invoices. Users can easily set up recurring invoices for clients who need to be billed on a regular basis. This feature allows businesses and freelancers to automate the invoicing process for services or products provided on a recurring schedule, such as monthly retainers, subscription services, or ongoing projects. Recurring invoices help save time and ensure consistent and timely payments from clients.

Yes. You can use Refrens only for invoices. There is no compulsion to use the payment gateway. In future, if you wish to receive payment online you can enable an online payment option when you create an invoice.

Yes. Your data is stored securely with encryption and cloud protection. We are ISO/IEC 27001:2022 certified. Your data stays private and is safely stored on the cloud.

Yes. You can view various reports. We are adding more reports and ability for custom reports regularly. You can also download all the invoices and transactions in a CSV format to create your own reports.

For as long as you want. We will not remove or delete any data or invoice that belongs to you, unless specifically instructed by you to do so.

Yes, Refrens allows you to add and manage multiple users under a single business account. This feature is beneficial for businesses that require collaboration among team members or have multiple staff members handling different aspects of invoicing and project management. Each user can have designated roles and permissions, ensuring secure and efficient management of your business processes.

Yes. You can add your company or personal logo to the invoices to make it more professional and for branding purposes.

Not at all. Your invoices will carry no ads. On the free version, the documents will carry a small, non-intrusive Refrens branding. It helps us spread the word and keep the free features going. Documents of Premium customers will carry only your business branding.

No. We do not have an app that can be downloaded. Refrens is a 100% web-based application. You will need an internet connection to use.

Not right now. We will be launching a mobile app soon.

Refrens is the best billing and invoicing software for startups, small businesses, and SMEs in India. Trusted by over 3 lakh users and rated 4.8 out of 5. Built by Indian entrepreneurs for Indian businesses, Refrens helps you create and send professional invoices, track payments in real-time. Refrens invoicing software simplifies complex financial operations like GST billing, GST filing, and other accounting operations with a user-friendly interface.

Refrens is always available to support our customers via email support(care@refrens.com), live chat support, and also over phone call and WhatsApp (+91 9104043036).

Invoicing software for small businesses in the UK

Why every business in the UK needs invoicing software

In today’s fast-paced UK business landscape, manual invoicing and spreadsheet tracking are outdated and inefficient. Whether you’re a consultant in London, a retailer in Manchester, or a designer in Bristol, using invoicing software helps keep your operations streamlined and HMRC-compliant.

Refrens, a leading UK invoicing software, simplifies everything from client billing and transaction tracking to expense management and VAT reporting.

With each product sold or service delivered, British businesses need prompt and professional documentation. Refrens ensures this by automating the entire invoicing process saving time and reducing errors.

Benefits of using Refrens invoicing software in the UK

Refrens provides a clear, searchable transaction history, giving instant insights into who you sold to, what was sold, and at what price. With live sales data, customer patterns, and revenue trends at your fingertips, UK businesses can make smarter, data-backed decisions.

Expense tracking is equally efficient. Whether it’s utility bills, office costs, or supplier payments, Refrens automatically records and categorizes them for better budgeting. Struggling with late payments? Refrens sends automatic invoice reminders via email and WhatsApp, ensuring faster payment collections.

Avoid manual mistakes with automatic VAT calculations, clean invoice templates, and item-level breakdowns. Whether your business is subject to standard VAT, reduced rates, or is VAT-exempt, Refrens supports flexible tax configurations and generates HMRC-ready summaries ideal for tax return preparation.

Why Refrens is one of the best free invoicing software options in the UK?

Refrens is beginner-friendly and requires no accounting background. The dashboard is simple, modern, and perfect for small teams or solo entrepreneurs.

You can personalise your invoices with your company logo, VAT registration number, or custom fields relevant to your sector whether you’re in consultancy, retail, trades, or creative services.

Many UK businesses serve global clients. With Refrens’ multi-currency invoicing, you can bill in GBP, USD, EUR, or other major currencies automatically converted and clearly itemised for clients overseas.

Need to invoice clients on a recurring basis? Refrens supports weekly, monthly, or custom intervals, along with automated reminders to keep clients in the loop.

Invoices can be sent via email, WhatsApp, a secure web link, or downloaded as PDFs making it easy to meet your clients’ preferences.

Refrens also helps manage your stock and track business expenses from one platform. With role-based access control, you decide who can edit or view sensitive information. All data is backed up securely in the cloud with enterprise-level encryption.

A complete business management toolkit

Beyond invoicing, Refrens offers tools to create proforma invoices, quotations, purchase orders, credit notes, debit notes, delivery challans, and payment receipts. Every document is interconnected, giving you a full overview of your business transactions.

For high-volume users, the bulk upload feature is a major time-saver import hundreds of invoices or contacts in seconds.

Running multiple businesses? Manage them all under one login, keeping accounts separate while simplifying admin tasks.

How different types of UK businesses use Refrens?

  • SMEs: Automate invoice creation, get real-time expense reports, and manage finances confidently during VAT return season.

  • Product-based businesses: Monitor inventory levels, add product images, and manage delivery workflows efficiently.

  • Consultants & service providers: Send polished quotations, track lead conversions, and issue invoices promptly.

  • Accountants & bookkeepers: Use Refrens to maintain ledgers, generate reports, and simplify year-end account preparation.

What you get for free?

Refrens offers unlimited invoices, recurring billing, VAT support, and multi-currency functionality all free. Add your brand elements, manage team members, and track performance metrics without paying a penny.

You also get access to client databases, vendor management, invoice conversion tools, and custom fields everything you need to run your small business more effectively.

Transparent Pricing

Refrens’ core invoicing features are 100% free, ideal for startups, consultants, and SMEs across the UK.

Optional paid upgrades are available for additional automation, integrations, or international payment gateways, but the essentials stay free for life.

Ready to simplify invoicing in the UK?

Get started with Refrens the all-in-one invoicing software built for UK businesses and growing teams.

From client payments to tax-friendly billing and inventory control Refrens keeps your finances organized and stress-free.

Sign up now and take the first step towards smarter business management.




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