# SolidInvoice

> Professional invoicing software for freelancers and small businesses. Free plan with online payments, paid plans from $9/month, and an opt-in 30-day Pro trial with no credit card.

SolidInvoice helps freelancers, contractors, and small businesses create professional invoices and quotes, manage clients, accept online payments via Stripe and PayPal, and automate recurring billing and payment reminders.

Key facts:
- Plans: Free ($0, 3 active clients, 5 invoices/month), Solo ($9/mo), Pro ($19/mo, most popular), Business ($39/mo). Annual billing equals 10 months on every paid plan.
- Every signup starts on the Free plan, free forever, no credit card required.
- Pro trial: opt-in, 30 days, no card. Start it from inside the app whenever you want it. When it ends, the account goes back to the Free plan and keeps all its data. No charge. One trial per user.
- Online payments: Stripe and PayPal on every plan, including Free
- Automated payment reminders, custom branding, REST API + MCP access: Pro and above
- Invoice and quote templates, custom domain, 10 team seats: Business
- Unlimited invoices on every paid plan
- Subscription billing handled by Lemon Squeezy
- GDPR compliant, EU hosting available
- Data portability: export invoices, clients, and payments as CSV or PDF anytime

## Product

- [Features](https://solidinvoice.co/features): Full feature list including invoicing, quotes, recurring billing, client management, online payments
- [Pricing](https://solidinvoice.co/pricing): Solo $9, Pro $19, Business $39
- [Pricing data (machine-readable)](https://solidinvoice.co/pricing.md): Structured pricing for AI agents

## Features

- [Estimate & Quote Software](https://solidinvoice.co/estimate-software): Send branded quotes, mark them accepted, and get the invoice created with every line copied
- [Recurring Billing Software](https://solidinvoice.co/recurring-billing-software): Daily, weekly, monthly, or yearly invoice schedules on every paid plan
- [Invoice Reminder Software](https://solidinvoice.co/invoice-reminder-software): Automated payment reminders before and after the due date (Pro and Business)

## For specific audiences

- [For Freelancers](https://solidinvoice.co/for-freelancers): Get paid faster, look professional
- [For Small Business](https://solidinvoice.co/for-small-business): Replace expensive accounting software
- [For Consultants](https://solidinvoice.co/for-consultants): Manage retainers and recurring clients
- [Invoicing for Plumbers](https://solidinvoice.co/invoicing-for-plumbers): Quotes, invoices, and online payments for plumbers
- [Invoicing for Electricians](https://solidinvoice.co/invoicing-for-electricians): Quotes, invoices, and online payments for electricians
- [Invoicing for Contractors](https://solidinvoice.co/invoicing-for-contractors): Quotes, invoices, and online payments for contractors
- [Invoicing for Cleaning Businesses](https://solidinvoice.co/invoicing-for-cleaning-businesses): Quotes, invoices, and online payments for cleaning businesses
- [Invoicing for Landscapers](https://solidinvoice.co/invoicing-for-landscapers): Quotes, invoices, and online payments for landscapers
- [Invoicing for Photographers](https://solidinvoice.co/invoicing-for-photographers): Quotes, invoices, and online payments for photographers

## Free tools

- [Free Invoice Generator](https://solidinvoice.co/invoice-generator): Fill in an invoice in the browser and download it as a PDF. Free, no signup, data stays in the browser
- [Free Quote Generator](https://solidinvoice.co/quote-generator): Price a job and download a quote or estimate as a PDF. Free, no signup, data stays in the browser
- [Late Fee Calculator](https://solidinvoice.co/late-fee-calculator): Work out the late fee or interest on an overdue invoice (flat, percentage, monthly or annual rate, grace period) and copy matching invoice wording. Free, no signup
- [How to Write an Invoice](https://solidinvoice.co/blog/how-to-write-an-invoice): Step-by-step guide to writing an invoice, with a required-fields checklist, an annotated example with real numbers, and common mistakes
- [Quote vs Invoice vs Receipt](https://solidinvoice.co/blog/quote-vs-proforma-vs-invoice-vs-receipt): What a quote, proforma invoice, invoice, receipt and credit note each do and when to send them, traced through one plumbing job
- [Invoice Numbering](https://solidinvoice.co/blog/invoice-numbering): Five invoice number formats with examples, which to choose, how to handle voided invoices, and the UK and EU sequential numbering rules
- [Progress Billing for Contractors](https://solidinvoice.co/blog/progress-billing-for-contractors): How small contractors invoice a job in stages, worked through an $18,000 remodel with a deposit, two draws, a change order and a final invoice, plus retainage and California deposit limits
- [What to Do When an Invoice Is Overdue](https://solidinvoice.co/blog/overdue-invoice-escalation): Day-by-day escalation plan for an overdue invoice, from the first reminder to a phone call, late fee, final notice, and small claims or collections, with the cost of each step
- [How to Invoice a Deposit](https://solidinvoice.co/blog/deposit-invoice): How to invoice a deposit and the final balance, worked through a $6,400 kitchen job with a 30% deposit, comparing one invoice with a partial payment against a separate deposit invoice, plus refundable deposits and deposit limits
- [Stripe vs PayPal Fees on a $2,000 Invoice](https://solidinvoice.co/blog/stripe-vs-paypal-invoice-fees): Stripe and PayPal fees worked out on a $2,000 invoice (domestic, international, currency conversion, invoicing add-ons, disputes, refunds), plus US, UK and EU rules on credit card surcharges, checked October 2026
- [Is Labor Taxable? Sales Tax on Services by Trade](https://solidinvoice.co/blog/sales-tax-on-services-invoices): Whether labor and services are subject to sales tax for plumbers, electricians, contractors, cleaners, landscapers, photographers and consultants, with rules from Texas, California, New York, Washington, Hawaii, New Mexico and South Dakota tax agencies and a sample invoice with taxable and untaxed lines, checked October 2026
- [Customer Won't Pay? Small Claims, Liens and Collections Compared](https://solidinvoice.co/blog/customer-wont-pay-invoice): Options when a customer won't pay an invoice (demand letter, payment plan, small claims, mechanics lien, collection agency, write-off), with California, Texas and New York small claims limits and fees, California and Texas lien deadlines, and UK court claims, checked October 2026
- [Late Payment Statistics](https://solidinvoice.co/blog/late-payment-statistics): Sourced statistics on how often invoices are paid late, how late, and what speeds up payment, with publisher and year for each figure
- [Free Invoice Templates](https://solidinvoice.co/invoice-template): Hub of free invoice templates in Google Docs, Google Sheets, Word, Excel and printable PDF, plus trade templates. No signup
- [Google Docs Invoice Template](https://solidinvoice.co/invoice-template/google-docs): Free invoice template to copy into Google Docs, with logo space, line items, totals and payment terms
- [Google Sheets Invoice Template](https://solidinvoice.co/invoice-template/google-sheets): Free invoice spreadsheet to copy into Google Sheets that calculates line amounts, tax and total
- [Word Invoice Template](https://solidinvoice.co/invoice-template/word): Free .docx invoice template with logo space, line-item table, totals and payment terms
- [Excel Invoice Template](https://solidinvoice.co/invoice-template/excel): Free .xlsx invoice template that calculates line amounts, subtotal, tax and total
- [PDF Invoice Template](https://solidinvoice.co/invoice-template/pdf): Free blank printable invoice PDF for Letter or A4 paper
- [Freelance Invoice Template](https://solidinvoice.co/invoice-template/freelance): Editable freelance invoice pre-filled with hourly, fixed-fee and revision lines, downloadable as PDF
- [Consulting Invoice Template](https://solidinvoice.co/invoice-template/consulting): Editable consulting invoice pre-filled with retainer, workshop, hourly and expense lines, downloadable as PDF
- [Plumbing Invoice Template](https://solidinvoice.co/invoice-template/plumbing): Editable plumbing invoice pre-filled with a realistic example, downloadable as PDF
- [Electrical Invoice Template](https://solidinvoice.co/invoice-template/electrical): Editable electrical invoice pre-filled with a realistic example, downloadable as PDF
- [Contractor Invoice Template](https://solidinvoice.co/invoice-template/contractor): Editable contractor invoice pre-filled with a realistic example, downloadable as PDF
- [Cleaning Invoice Template](https://solidinvoice.co/invoice-template/cleaning): Editable cleaning invoice pre-filled with a realistic example, downloadable as PDF
- [Landscaping Invoice Template](https://solidinvoice.co/invoice-template/landscaping): Editable landscaping invoice pre-filled with a realistic example, downloadable as PDF
- [Photography Invoice Template](https://solidinvoice.co/invoice-template/photography): Editable photography invoice pre-filled with a realistic example, downloadable as PDF

## Comparisons

- [SolidInvoice vs FreshBooks](https://solidinvoice.co/vs-freshbooks): from $9/mo vs $21-65/mo
- [SolidInvoice vs QuickBooks](https://solidinvoice.co/vs-quickbooks): from $9/mo vs $35/mo, invoicing-focused vs full accounting
- [SolidInvoice vs Invoice Ninja](https://solidinvoice.co/vs-invoice-ninja): from $9/mo vs $10-14/mo
- [SolidInvoice vs Zoho Invoice](https://solidinvoice.co/vs-zoho-invoice): from $9/mo vs $15/mo
- [Jobber vs Housecall Pro](https://solidinvoice.co/jobber-vs-housecall-pro): Field service software compared, plus an invoicing-only option for small crews
- [Comparisons hub](https://solidinvoice.co/alternatives): All side-by-side comparisons

## Alternatives pages

- [FreshBooks Alternative](https://solidinvoice.co/freshbooks-alternative)
- [QuickBooks Alternative](https://solidinvoice.co/quickbooks-alternative)
- [Invoice Ninja Alternative](https://solidinvoice.co/invoice-ninja-alternative)
- [Zoho Invoice Alternative](https://solidinvoice.co/zoho-invoice-alternative)
- [Jobber Alternative](https://solidinvoice.co/jobber-alternative): For small crews that need quotes, invoices and payments, not dispatch
- [Housecall Pro Alternative](https://solidinvoice.co/housecall-pro-alternative): For home-service crews that mostly need estimates, invoices and payments
- [Best Invoicing Software](https://solidinvoice.co/best-invoicing-software): Curated list

## Self-hosted edition

SolidInvoice's core is open source (MIT licensed). Teams that prefer to run it on their own servers can:

- [Open Source](https://solidinvoice.co/open-source): MIT license, GitHub source code
- [Download (self-hosted)](https://solidinvoice.co/download): Install via Docker or Homebrew
- [Cloud vs Self-Hosted](https://solidinvoice.co/comparison): Which fits you

## Support and Legal

- [Contact](https://solidinvoice.co/contact)
- [Affiliate Program](https://solidinvoice.co/affiliates): Earn 20% recurring commission on every subscription you refer, paid through Lemon Squeezy
- [Blog](https://solidinvoice.co/blog)
- [Invoice Requirements by Country](https://solidinvoice.co/invoice-requirements): The fields an invoice must show to meet each country's tax rules, checked against official sources
- [Australia Tax Invoice Requirements](https://solidinvoice.co/invoice-requirements/australia): The 8 fields an Australian tax invoice needs under the GST Act, the A$82.50 and A$1,000 thresholds, and ABN rules
- [Canada GST/HST Invoice Requirements](https://solidinvoice.co/invoice-requirements/canada): What a Canadian invoice must show at under $100, $100 to $499.99 and $500 or more under the ITC Information Regulations, plus HST rates and the $30,000 small supplier rule
- [UK VAT Invoice Requirements](https://solidinvoice.co/invoice-requirements/uk): The 10 fields HMRC requires on a full VAT invoice, the £250 simplified invoice, the 30-day issue rule and VAT in sterling
- [Invoicing Glossary](https://solidinvoice.co/glossary): Short definitions of invoice and payment terms (proforma invoice, credit note, accounts receivable, DSO, tax invoice, dunning, net 30 and more)
- [Privacy Policy](https://solidinvoice.co/privacy-policy)
- [Terms of Service](https://solidinvoice.co/terms-of-service)
- [Refund & Cancellation Policy](https://solidinvoice.co/refund-policy)

## Conversion

- Start free: https://solidinvoice.app/register (Free plan, no credit card required; try Pro free for 30 days whenever you need it)