What to look for in billing software: 12 features (2026)
Guides
Read time: 7 min
Arnon Shimoni
✓ Expert opinion
Billing software is judged on the invoices it gets wrong, not the ones it gets right. Most products demo well on a monthly subscription with one price.
The differences show up on the third pricing model, the first commit, the second legal entity and the first month-end where finance has to explain a number. This guide lists the features that decide those moments, the ones you probably do not need yet, and the questions that separate a demo from an answer.
Key features of billing software
Feature | Why it matters | Question to ask the vendor |
|---|---|---|
Pricing models | Seats, usage, credits, flat fees and percentages end up on the same customer. If the system holds one model natively and bolts on the rest, every new plan is an engineering ticket. | Show me one subscription with a seat fee, a metered rate with tiers, and a percentage fee with a floor and a cap. |
Usage has to be counted, deduplicated and attributed to the right customer and period before it can be priced. | What happens to an event that arrives three days late, or twice? | |
Credits and wallets | Prepaid balances, grants, expiry and drawdown order are the base of AI and API pricing. | Can a customer hold two credit types with different expiry, and which is drawn first? |
Enterprise deals are commitments with drawdown, overage and a settlement at the end. | Show me the invoice in the month usage goes over the drawdown, and the true-up at term end. | |
The quote is where the pricing is decided. If it lives in a CRM and is retyped into billing, the two drift. | Does a signed quote create the subscription, the invoices and the entitlements without re-entry? | |
Sequential, gap-free numbering per legal entity is a legal requirement in most of Europe. | How are invoice numbers assigned per entity, and can a number ever be skipped? | |
VAT, sales tax and country mandates (France 2026, Peppol, Italy SDI, Poland KSeF) are now part of issuing an invoice. | Which tax engines are integrated, and which e-invoicing networks can you submit to today? | |
Each selling entity needs its own numbering, tax registrations, currencies and bank details. | Can one customer be billed by two of my entities from one subscription? | |
Payments and dunning | Collecting the invoice is the point. Failed payments need retries and reminders that match the method. | Which PSPs are supported, and can I keep mine? What does the retry schedule look like for SEPA vs card? |
ERP sync | Finance closes the month in the ERP. Invoices, payments and credit notes have to post there without manual journals. | Which ERPs post automatically, and at what granularity: per invoice, per line, or a summary journal? |
ASC 606 and IFRS 15 schedules should come from the same contract data that produced the invoice. | Is rev rec computed from the subscription, or exported to a spreadsheet? | |
API and agent access | Finance and engineering increasingly operate billing through code and agents, not only the UI. | Is there a full API, and an MCP server that can write, not only read? |
Features you probably don't need yet
Pricing simulation. Useful once you have a year of usage data and a price change to test. Before that it simulates a guess.
A customer portal with self-serve plan changes. Needed when customers change plans more often than your account managers can handle. Most B2B companies under a few hundred customers are not there.
Marketplace invoicing (AWS, Azure, GCP). Needed when a meaningful share of deals is procured through a cloud marketplace. Ask how many of last year's deals that was.
When Stripe Billing or Chargebee is enough
If most of your revenue is flat subscriptions, your payments already run on Stripe, you sell from one legal entity and your finance team can live with one invoice format, Stripe Billing is enough and is the cheapest path. If you are a subscription business with a large self-serve base, heavy dunning and a long list of integrations to connect, Chargebee is built for that and is mature.
The point at which both stop being enough is the same: a second pricing model on the same customer, a commitment with a true-up, or a second billing entity in another country. Then the workarounds cost more than the platform.
Questions to ask in a demo
Build my hardest customer live: show the subscription, the first invoice and the invoice after a usage spike.
What happens to usage that arrives after the invoice was issued?
Walk through a commit: drawdown month, overage month, true-up.
Show an invoice from each of my legal entities, with its own number sequence and tax.
Which of my countries' e-invoicing mandates can you submit to today, and which are on the roadmap?
Show the journal that posts to my ERP for one invoice, one payment and one credit note.
What is in the API that is not in the UI, and the reverse?
How long did your last five customers of my size take from contract to first invoice?
Where Solvimon fits
Solvimon runs seats, usage, credits, commits and percentage fees on one ledger, with native quoting, per-entity invoicing and e-invoicing for France, Peppol, Italy, Spain, Poland, Hungary and Estonia, payments through Stripe, Adyen, Mollie or Checkout.com, and a write-capable MCP server. Europe's largest fintechs run their billing on it. About half of migrations go live inside six weeks.
Frequently asked questions
What are the most important features in billing software?
Support for every pricing model you sell on one customer, metering that handles late and duplicate events, credits and commits with true-ups, quoting that creates the subscription, per-entity invoicing with compliant numbering and tax, payments with dunning, and automatic posting to the ERP.
What is the difference between billing software and invoicing software?
Invoicing software produces the document from an amount you give it. Billing software works out the amount: it meters usage, applies the pricing plan, the commit and the credits, then issues the invoice, collects it and posts it. Invoicing is the last step of billing.
How much does billing software cost?
Entry pricing in October 2026 ranges from a percentage of billed volume (Stripe Billing 0.7%, Solvimon 0.4% after the first $3M free for qualifying AI companies) to fixed monthly plans (Hyperline from $299 plus 0.7%, Sequence from $799, Maxio from $599). Enterprise platforms such as Zuora are quote-only.
How long does it take to implement billing software?
Weeks to months. In Solvimon's migrations about half go live inside six weeks and a third take more than three months. The driver is the number of contract exceptions multiplied by customer volume, not how custom the pricing is.
Related guides
Best billing software for sales-led and enterprise deals. The CPQ handoff, commits, ramps and true-ups across 8 platforms.
Best billing software for fintech and payments companies. Percentage fees, floors, caps and nested rates across 7 platforms.
Best multi-entity billing platforms in Europe. Per-entity numbering, tax and e-invoicing mandates across 8 platforms.
Month-end close for high-volume finance teams. Where close time goes and the stack behind a fast close.
Ready for billing v2?
Solvimon is monetization infrastructure for companies that have outgrown billing v1. One system, entire lifecycle, built by the team that did this at Adyen.
