Three of the four catalog tools built for employee expense management offer a free plan, and none of those three free plans cover the same business. Ramp issues cards only to companies registered in the United States. Moss operates only in the UK, Germany, Austria, and the Netherlands. Brex's free Essentials plan works almost anywhere but caps out at two entities before the per-seat Premium tier kicks in. The one tool left standing, Rydoo, has no free tier at all, a five-user minimum, and is the only one of the four actually built for a team spending across more than a handful of countries.
That split matters more than any feature comparison, because "free" is doing different work in each case. A free plan funded by card interchange (Ramp) is a real zero-cost option, not a bait tier, and Brex's free Essentials tier is a real zero-cost option too, but each comes with a geography or entity-count ceiling baked into the business model. A firm sorting clients into expense tools needs to know which ceiling applies before comparing anything else. This guide sits one layer below accounts payable automation, which handles what a business owes its vendors; expense management is the other half of the spend picture, what employees spend on cards, receipts, and reimbursements.
The short answer
- US small and mid-sized clients that want free cards and expense coding: Ramp bundles corporate cards, automated expense coding, and basic bill pay on a free base plan funded by card interchange, no monthly fee.
- Clients with up to two entities that want a global card program: Brex's free Essentials plan covers corporate cards, expense rules, and bill pay for up to two entities with no per-seat fee, and accepts cards globally.
- UK and European small businesses: Moss combines cards, reimbursements, and accounts payable for teams in the UK, Germany, Austria, and the Netherlands, free for up to three users and 20 invoices a month.
- Mid-market or multinational teams with real travel spend: Rydoo handles per diems, mileage, and multi-currency policy checks across more than 80 countries, from about $9 per user a month with a five-user minimum.
- Clients that just need receipts filed, not a card program: Receipt AI captures receipts by text, email, or photo and posts them into QuickBooks Online or Xero, starting at $29 a month, with no cards or approval workflow attached.
The rest of this guide breaks down why the free tiers do not compete with each other, compares all five tools on a single table, and groups them by the client situation each one actually fits.
What AI expense management software actually does
Expense management covers what employees spend, not what a business owes its suppliers. The core loop is the same across every tool in this category: issue a card or accept a submitted receipt, match the spend to a receipt automatically, run it through a policy check or approval chain, and post the result to the ledger. Where the tools diverge is in what sits around that loop: corporate cards with per-employee spend limits, multi-currency and per-diem handling for staff who travel, HRIS sync so approval rules follow the org chart, or nothing more than fast, accurate receipt capture for a team that already has a card program elsewhere.
That is a different job than paying a vendor's invoice, which is what AP automation software does, and different again from collecting money a client is owed, which the accounts receivable automation guide covers. Some vendors blur the line: Ramp and Brex both bundle basic bill pay alongside expense management, and a firm already running vendor payments through BILL or Stampli may not need a separate expense tool at all if employee spend is light. This guide assumes the actual problem is employee cards, receipts, and reimbursements, not vendor bills.
Why the same "expense management" tag splits into four different products
Free, US-only, funded by card interchange: Ramp
Ramp launched in 2019 with a specific angle: most corporate cards pay cashback on every dollar spent, which quietly rewards overspending, so Ramp built a card that limits spend per employee and per vendor instead, and funds itself from interchange fees rather than a subscription. The base plan is free and covers corporate cards, expense management, basic accounts payable, and accounting sync with QuickBooks, Xero, NetSuite, and Sage. Receipts match to transactions automatically, and coding suggestions draw on past entries. The Plus plan, $15 per user a month with a 20 percent discount on annual billing plus a team-size platform fee, adds AI-driven expense review and deeper ERP connections. The one hard limit: Ramp issues cards only to businesses registered in the United States, so an international client is out regardless of size.
Free, but capped at two entities: Brex
Brex covers similar ground to Ramp, corporate cards, automated expense rules, bill pay, and reimbursements, on a free Essentials plan with no per-seat fee, and it accepts cards globally rather than issuing to the US alone. The catch sits in entity count rather than geography: Essentials covers up to two entities, and a client running a third needs the Premium tier at $12 per user a month, which adds customizable expense policies, dynamic approval chains, AI-driven compliance audit detection, and HRIS connections. Enterprise pricing above that covers unlimited entities and local card issuance in more than 50 countries. For a firm with an international client structured under two entities, Brex reaches further than Ramp does; for a client with three or more, the free tier stops applying.
Free tier, but UK and EU only: Moss
Moss takes a modular approach: corporate cards, employee reimbursements, and accounts payable in one platform, with a genuinely free plan for up to three users, unlimited cards, and up to 20 invoices a month. Paid tiers drop the per-user model entirely, charging a platform fee plus whichever modules a team turns on (cards, reimbursements, AP), quoted on request. Moss connects to Xero, NetSuite, QuickBooks Online, Sage Intacct, Microsoft Dynamics, and DATEV, with that last connection reflecting real depth in the German market. The constraint is geography: Moss operates only in the UK, Germany, Austria, and the Netherlands, and is regulated in Germany, so it is not an option for a US client no matter how small.
No free tier, built for teams that spend across borders: Rydoo
Rydoo is the odd one out among the four: no free plan, a five-user minimum, and pricing that starts around $9 per user a month on annual billing for Essentials, rising to about $11 for Pro, with custom Business and Enterprise tiers above that adding cards, API access, and SSO. What that price buys is depth the free tools do not offer: AI receipt scanning, per-diem handling, mileage tracking, multi-level approvals, and compliance checks across more than 80 countries, plus HR system sync with Workday and ADP so approval rules follow staff as they move between cost centers. Rydoo is squarely an employee-expense product, not a vendor-bill one: it has no accounts-payable module for invoices or vendor payments. It is the right fit once a client's staff actually cross borders often enough that per diems and multi-currency policy checks are a real recurring need, not an edge case.
Capture only, no cards or approvals: Receipt AI
Receipt AI is not a full expense platform and does not claim to be. It solves one specific problem: a receipt gets texted, emailed, or photographed the moment it is created, and the tool extracts the amount, vendor, and date, checks for duplicates, and posts the result into QuickBooks Online or Xero. There are no cards, no spend limits, and no approval chain. Pricing starts at $29 a month for one user and 100 receipts, rising to $99 for five users and 500 receipts, with QuickBooks and Xero sync unlocking at that tier. For a client whose real problem is a shoebox of paper receipts rather than a need for corporate cards, this is a cheaper, narrower purchase than any of the four full platforms above.
