Managed service providers used to sell hours and hardware. Now a growing share of their revenue is recurring cloud subscriptions from Microsoft, Adobe, Acronis and a long tail of other vendors.
The catch is that every vendor and distributor sends its own invoice, in its own format, on its own schedule.
Market analysts don’t agree on the exact size of the managed services market in 2026. Mordor Intelligence puts it at about US$430 billion, while MarketsandMarkets is closer to US$380 billion. Either way, the money is real, and so is the admin. Flexera’s 2025 State of the Cloud Report found 84% of organisations call managing cloud spend a top challenge, and billing teams feel that first. Here are six platforms worth a look, each with one verdict.
1. Infiterra
Infiterra is a strong contender for the best subscription billing platform for MSPs and IT distributors that resell other people’s subscriptions and need one accurate invoice at the end of it. It handles prepaid, postpaid, usage-based and hybrid billing, with proration and multi-currency support, and it can consolidate several subscriptions onto a single customer invoice.
Around that core sits a product catalogue, a white-label cloud marketplace, reseller management with multi-tenant controls, and credit risk management. It connects to ERP, CRM, accounting and PSA systems, supports payment gateways, and exposes open APIs. Pre-built vendor connectors cover names like Microsoft, Adobe, Acronis and Dropbox, which is the part that matters most if Microsoft CSP automation is your pain point.
One customer, the DACH-region MSP Cosmo Consult, reports 95% automation of its billing on Infiterra’s own case page. That’s a testimonial, not independent testing, so treat it as a signal rather than proof.
Best for: distributors and larger MSPs with multi-vendor portfolios.
2. RackNap
RackNap covers subscription management, billing and a cloud marketplace for MSPs, CSPs and cloud distributors. It handles resale of Microsoft 365, Azure, AWS, Google Workspace and Acronis, plus usage-based and hybrid models.
It’s feature-rich, and it’s priced like it. RackNap’s own 2026 comparison lists its Standard plan from US$10,000 a month plus setup and transaction fees, a figure the vendor reports itself.
Best for: cloud-heavy providers with the budget to match.
3. Pax8
Pax8 is a distributor marketplace first and a billing tool second. Its integrations with PSAs such as Autotask, ConnectWise, Kaseya, Syncro and SuperOps mean invoices from Pax8 flow straight into your billing, which is genuinely convenient.
The limit is obvious. It reconciles Pax8 purchases, not everything else you buy.
Best for: MSPs sourcing mostly through Pax8.
4. ZaveIT
ZaveIT targets MSPs that want ordering and billing in one place. It offers a centralised product and service catalogue and branded self-service ordering portals, so customers can order without emailing your service desk. That ties in with what managed IT support covers for a small business day to day.
Public detail on pricing and integrations is thin, so confirm connector coverage on a demo before committing.
Best for: small MSPs wanting ordering plus billing.
5. Chargebee
Chargebee is a well-established recurring billing platform, and RackNap’s comparison names it a top pick for SaaS companies. Plans, coupons, trials and dunning are all handled well. It wasn’t designed around distributor reconciliation, so expect custom connectors if you resell lots of third-party licences.
Best for: MSPs selling their own SaaS products.
6. Zuora
Zuora is the heavyweight of subscription billing, and RackNap’s comparison lists it as the pick for large enterprises. Complex pricing models are its strength. Implementation is its weakness: projects are long and costly, and a typical MSP won’t use most of what it offers.
Best for: large organisations with dedicated finance systems teams.
What to look for in a subscription billing platform
Billing for managed services is not the same as billing for a single SaaS product. A good platform has to cope with the messy middle between what you buy and what you resell.
- Vendor and distributor reconciliation. Can it ingest usage and licence data from Microsoft CSP and distributors, then match it to what you charge?
- Proration and mid-term changes. Customers add and drop seats all month. Manual credit notes get old fast.
- Hybrid pricing. Flat fees, per-seat, usage-based and bundles, sometimes on one invoice.
- Multi-currency and tax. Australian buyers need AUD handling and GST done properly, especially when vendors bill in USD. As our look at financial infrastructure for growing tech businesses explains, exchange rates can eat into margins when software is sold across borders.
- PSA, ERP and accounting integrations decide how much re-keying your team does.
- Reseller and multi-tenant controls. Essential for distributors billing through channel partners.
A caveat: no tool nails all six. Be honest about which two or three cost you the most time today, and weigh the list against those.
How to choose
Match the platform to your revenue mix, not the longest feature list.
- Distributor or large reseller with many vendors: a dedicated platform like Infiterra or RackNap.
- Mid-size MSP buying mostly from one distributor: Pax8’s marketplace may be enough.
- Small MSP: ZaveIT keeps things light.
- Own-SaaS vendor: Chargebee, or Zuora at enterprise scale.
Whichever you shortlist, ask about security early. Billing platforms hold customer and vendor data, and the Australian Signals Directorate publishes ACSC guidance on engaging MSPs that’s a sensible checklist for supplier questions.
Conclusion
If cloud resale and multi-vendor invoicing dominate your revenue, a dedicated billing platform will beat PSA billing every time. If you mostly sell your own product, a general SaaS tool is fine. Many businesses are rethinking in-house IT, which only adds to the number of subscriptions MSPs need to bill. Request demos from two or three vendors and test them with your messiest real invoice.
