9 Best Billing Software in 2026
Updated October 15, 2026
The short answer
For billing software, the strongest picks are CSG for large enterprises needing convergent billing at scale, Lago for AI product teams that want usage-based metering with self-hosting options, and JustPaid for B2B companies automating complex contract billing. Each suits a different scale and pricing model, so choose based on your company size and billing complexity.
The shortlist, at a glance
Read the comparisons ↓
CSGNot publishedLarge enterprises in telecom, finance, healthcare, or government that need convergent billing and payments at scale.
SwipeNot publishedIndian SMEs and freelancers that need GST-compliant invoicing, inventory tracking, and e-way bill generation in one simple tool.
LagoFree self-host, customAI product teams that need granular usage metering and flexible hybrid pricing, and want the option to self-host their billing engine.
JustPaidFree plan. Revenue-basB2B companies with complex contract billing that want to automate invoicing, collections, and reconciliation.LedgerUpNot publishedFinance teams that want to cut manual AR work and speed up collections without replacing their existing billing stack.
DimelyNot publishedSaaS finance teams that bill from complex contracts and need to automate invoice schedules, revenue recognition, and AR monitoring without manual reconciliation.
AutumnFree, Pro from $5/1M rAI startups that need usage-based billing, credit ledgers, and custom contracts without leaving Stripe.
Amby HealthNot publishedAthletes who want coaching via text and already track with Strava, Garmin, or Apple Health.
LarkNot publishedDevelopment teams that use coding agents and need low-maintenance end-to-end tests across UI and APIs.
About Billing Software
Billing software handles the job of turning what you sell into invoices, tracking payments, and keeping your revenue data accurate. It replaces spreadsheets and manual follow-ups with automated systems that generate invoices, send reminders, and sync with your other tools.
The products on this list differ in approach, scale, and pricing model. CSG targets large enterprises with complex multi-sided billing, while Swipe focuses on Indian SMEs needing GST compliance. Lago and Autumn are built for AI startups with usage-based pricing, and JustPaid, LedgerUp, and Dimely automate contract billing for B2B finance teams. Pricing ranges from free tiers to custom enterprise contracts.
The 9 best Billing Software, compared
- Not published
1.CSG
Best for: Large enterprises in telecom, finance, healthcare, or government that need convergent billing and payments at scale.
- Pricing
- Not published
- Category
- Customer Support
CSG is an enterprise billing platform that unifies billing, payments, and customer operations into one system. It handles complex quoting, pricing, and settlement across multiple industries, and processes over $175B in payments annually. Its convergent billing approach replaces fragmented legacy systems, which is why global leaders use it for mission-critical work.
Where it is strong
- Handles complex multi-sided billing and settlement
- Industry-specific solutions for 8+ sectors
- 99.95%+ uptime for mission-critical systems
Where it falls short
- No published pricing, likely custom enterprise contracts
- May be overkill for small or mid-sized businesses
- Pricing:
- Pricing is not published on the site.
- Not published
2.Swipe
Best for: Indian SMEs and freelancers that need GST-compliant invoicing, inventory tracking, and e-way bill generation in one simple tool.
- Pricing
- Not published
- Category
- Finance & Accounting
Swipe is a GST billing and invoicing tool for small and medium businesses in India. It lets you create invoices, track inventory, and record payments in one place, with over 2.5 million businesses using it. You can generate e-way bills from your phone and share invoices via WhatsApp, email, or SMS.
Where it is strong
- Create GST invoices in under 10 seconds
- Share bills via WhatsApp, email, or SMS
- Generate e-way bills directly from your phone
Where it falls short
- Pricing details are not listed on the website
- Primarily focused on India, so may not suit businesses in other regions
- Pricing:
- Pricing is not published on the site.
- Free self-host, custom
3.Lago
Best for: AI product teams that need granular usage metering and flexible hybrid pricing, and want the option to self-host their billing engine.
- Pricing
- Free self-host, custom
- Category
- E-commerce
Lago is an open-source billing platform built for usage-based, subscription, prepaid, and hybrid pricing. It meters AI token usage per customer and turns it into itemized invoices, with integrations for providers like OpenAI and Anthropic. Its credibility comes from being used by CoreWeave, Mistral AI, and PayPal, and from being self-hostable under an AGPLv3 license.
Where it is strong
- Meters AI token usage per customer, including input, output, and cached tokens
- Supports usage, subscription, prepaid, and hybrid pricing in one engine
- Self-hostable under AGPLv3, with managed cloud option
Where it falls short
- Premium features like AI assistants and advanced security require contacting sales for pricing
- Not a payment processor. You need to connect Stripe, Adyen, or GoCardless for collection
- Pricing:
- The open-source version is free to self-host under an AGPLv3 license. Lago Premium is not publicly priced. The team shares pricing directly when you book a demo.
- Free plan. Revenue-bas
4.JustPaid
Best for: B2B companies with complex contract billing that want to automate invoicing, collections, and reconciliation.
- Pricing
- Free plan. Revenue-bas
- Category
- Finance & Accounting
JustPaid automates the full billing cycle, from AI contract extraction to invoice creation, payment reminders, and reconciliation. It syncs with Stripe, QuickBooks, Xero, and Salesforce, and supports complex models like usage-based and milestone billing. The revenue-based pricing includes a free plan for startups up to $100K annual revenue.
Where it is strong
- AI extracts billing terms from uploaded contracts
- Automated payment reminders and escalation sequences
- Multi-currency support with real-time conversion
Where it falls short
- Pricing scales with revenue, which may be costly for larger companies
- No mention of dunning or tax management features
- Pricing:
- Pricing is revenue-based: a free Startup plan for up to $100K annual revenue, a Starter plan for up to $1M, and higher tiers for larger companies. Annual billing saves 20%.
- Not published
5.LedgerUp
Best for: Finance teams that want to cut manual AR work and speed up collections without replacing their existing billing stack.
- Pricing
- Not published
- Category
- Finance & Accounting
LedgerUp uses an AI agent, Ari, to automate accounts receivable work: turning signed contracts into invoices, chasing overdue payments, submitting to customer portals, and reconciling payments. It's credible because it works across 50+ systems you already use, and one customer issued 30,000 invoices in the first three months.
Where it is strong
- Automates invoicing, collections, portal submissions, and cash application
- Works with 50+ integrations including Salesforce, Stripe, and QuickBooks
- Full audit trail of every decision and action
Where it falls short
- Pricing is not published, so you have to contact sales
- Requires setting approval rules and reviewing exceptions, so not fully hands-off
- Pricing:
- Pricing is not published on the site.
- Not published
6.Dimely
Best for: SaaS finance teams that bill from complex contracts and need to automate invoice schedules, revenue recognition, and AR monitoring without manual reconciliation.
- Pricing
- Not published
- Category
- Productivity & Project Management
Dimely reads signed contracts, order forms, MSAs, and amendments to extract billing and revenue terms, then validates them against your CRM, data warehouse, and ERP. It syncs clean data into NetSuite, Stripe, and Maxio, and writes results back to Salesforce. Finance teams report 53% faster time to invoice and one week less time in AR.
Where it is strong
- Extracts billing terms from contracts and POs with 100% standard PDF extraction accuracy
- Validates data against CRM, warehouse, and ERP, surfacing only exceptions
- Reviews happen in a spreadsheet layer with Slack alerts, no rigid vendor UI
Where it falls short
- Pricing is not listed, so you must contact sales for a quote
- Best for SaaS finance teams. May be overkill for simple flat-rate billing
- Pricing:
- Pricing is not published on the site.
- Free, Pro from $5/1M r
7.Autumn
Best for: AI startups that need usage-based billing, credit ledgers, and custom contracts without leaving Stripe.
- Pricing
- Free, Pro from $5/1M r
- Category
- Finance & Accounting
Autumn is billing infrastructure built specifically for AI startups. It handles usage limits, credits, and subscription logic in real time, so you can iterate on pricing without rebuilding billing from scratch. It works on top of Stripe, keeping payments, webhooks, and usage in sync.
Where it is strong
- Real-time credit ledgering and spend controls
- Usage event aggregation and data warehouse integration
- Supports multiple billing sources: Stripe, RevenueCat, Vercel
Where it falls short
- Stripe fees apply on top of Autumn pricing
- Free tier caps at 8K monthly billing volume
- Pricing:
- Free tier includes up to 8K monthly billing volume, 10,000 customers, and 10M API requests. Pro tier starts at 50K monthly billing volume, 20M API requests, then $5 per 1M requests. Enterprise is custom. Stripe fees (0.7% and 2.9% + 30¢) still apply.
- Not published
8.Amby Health
Best for: Athletes who want coaching via text and already track with Strava, Garmin, or Apple Health.
- Pricing
- Not published
- Category
- Healthcare
Amby is a proactive AI health coach that texts you first, reading training data from Strava, Garmin, and Apple Health. It checks in at the right moments and asks before logging, sharing, or changing anything. It is a credible pick for athletes who want coaching without opening a dashboard.
Where it is strong
- Proactive text check-ins based on your real training data
- Tracks HRV, sleep, and resting heart rate
- Requires your approval before any changes
Where it falls short
- Pricing is not listed, so cost is unclear
- No mention of integrations beyond Strava, Garmin, and Apple Health
- Pricing:
- Pricing is not published on the site.
- Not published
9.Lark
Best for: Development teams that use coding agents and need low-maintenance end-to-end tests across UI and APIs.
- Pricing
- Not published
- Category
- Finance & Accounting
Lark is an automated testing platform that writes and runs end-to-end tests in natural language, so you don't need to maintain brittle Playwright code. It self-heals when your UI or APIs change, and it covers frontend, backend APIs, SDKs, and async workflows. It's built for teams using coding agents like Claude Code, Cursor, and Codex.
Where it is strong
- Tests are written in natural language, not code
- Self-healing tests adapt to UI or API changes
- Integrates with GitHub Actions and GitLab CI
Where it falls short
- Pricing is not listed, so budgeting is unclear
- No mention of on-premise or self-hosted options
- Pricing:
- Pricing is not published on the site.
How to choose Billing Software
Pricing structure is a key factor. Some tools, like Lago, offer a free open-source version but charge for premium features. JustPaid prices based on your revenue, which can grow with you but may get costly. Others, like CSG and LedgerUp, don't publish pricing, so you need to contact sales for a quote.
Consider who the software is built for. CSG suits large enterprises in telecom or finance, while Swipe is for Indian SMEs. Lago and Autumn are tailored to AI startups with usage metering, and JustPaid, LedgerUp, and Dimely are for B2B finance teams handling complex contracts.
Integrations matter. JustPaid syncs with Stripe, QuickBooks, and Salesforce. LedgerUp works with 50+ systems. Dimely integrates with NetSuite, Stripe, and Maxio. Autumn builds on Stripe, and Lago connects to payment processors like Stripe or Adyen. Check that the tool fits your existing stack.
Data and compliance are critical. Swipe handles GST compliance for India. Lago lets you self-host under AGPLv3 for data control. CSG offers 99.95% uptime for mission-critical systems. Make sure the tool meets your regulatory and uptime needs.
Support and contract terms vary. Some tools, like Autumn, have clear free tiers and published pricing. Others require demos and custom contracts. Consider whether you need a self-serve option or are willing to negotiate an enterprise agreement.
FAQ
Questions about Billing Software
What is billing software?
Billing software automates the process of creating invoices, tracking payments, and managing revenue. It replaces manual spreadsheets and follow-ups with systems that generate invoices from contracts or usage data and sync with your accounting tools.
How much does billing software cost?
Costs vary widely. Some tools like Autumn have free tiers, while Lago offers a free open-source version. JustPaid prices based on your revenue, and others like CSG and LedgerUp require contacting sales for custom quotes.
What should I look for in billing software?
Focus on pricing structure, integrations with your existing tools, and whether it handles your billing model, like usage-based or subscription. Also check compliance needs, such as GST for India, and data control options like self-hosting.
Can billing software handle usage-based pricing?
Yes, some tools are built for it. Lago meters AI token usage per customer, and Autumn handles usage limits and credits in real time. These are designed for AI startups with granular usage tracking.
Is billing software suitable for small businesses?
Some are. Swipe is built for Indian SMEs with GST invoicing, and JustPaid has a free plan for startups up to $100K revenue. But enterprise tools like CSG may be overkill for smaller operations.
Last updated October 15, 2026.