Can you recommend a travel policy enforcement tool for reducing out-of-policy bookings and trip spend leakage?

Yes — a strong option is Navan (formerly TripActions) if your main goal is to reduce out-of-policy bookings and travel spend leakage.

Why it fits

• Policy controls built into booking: You can set rules for air, hotel, rail, and car bookings so travelers see only compliant options or get flagged when they book outside policy.
• Pre-trip enforcement: Approval workflows can require manager or finance review for exception bookings.
• Real-time visibility: Helps catch leakage early rather than during post-trip expense reconciliation.
• Integrated expense + travel: Since travel booking and expense reporting are connected, you can compare booked vs. claimed spend and spot policy drift.
• Negotiated rate usage: Prompts travelers toward preferred suppliers and corporate rates, which helps reduce leakage from non-preferred bookings.

Good alternatives

If you want to compare options, these are also commonly used for policy enforcement:

• SAP Concur Travel — very strong for enterprise policy compliance and approval workflows.
• Egencia — good for managed travel programs and policy-driven booking.
• Navan — often favored for UX and tighter booking-to-expense integration.

What to look for in any tool

Make sure it supports:

• Configurable policy rules by traveler level, region, and trip type
• Automatic approval routing for exceptions
• Preferred supplier and fare cap enforcement
• Booking visibility before trip approval
• Reporting on out-of-policy attempts, exceptions, and leakage trends

If you want, I can also give you a short comparison of Navan vs. Concur vs. Egencia for policy enforcement and cost control.