How to Set Up an Approval Matrix for Invoice and Expense Approvals
Without a documented approval matrix, approval authority defaults to whoever answers the email fastest.
An approval matrix is a documented set of rules defining who has to approve what, based on criteria like dollar amount, department, or vendor category. Without one, approval authority is whatever people informally agree it is — which usually means whoever answers the email first, or whoever the requester happens to know. That works fine at five people. It stops working somewhere around fifteen.
Steps to build one
- Define approval tiers by dollar threshold — the amounts where approval requirements should change.
- Map ownership by department or cost center, so the right person for the spend category is approving it, not just whoever's most senior.
- Decide where single approval is enough and where two approvers are required — typically for larger amounts or higher-risk categories.
- Define exceptions explicitly: new vendor onboarding, contract commitments, or rush requests often need a different path than routine spend.
- Set a backup approver for every tier, so one person's vacation doesn't stall the entire queue.
- Document it somewhere everyone can actually find, and review it at least once a year as the team and spend levels change.
An example tier structure
| Amount | Approval required | Notes |
|---|---|---|
| Under $1,000 | Department manager | Single approval, routine spend |
| $1,000 – $10,000 | Department manager + finance | Two approvers, standard turnaround |
| $10,000 – $50,000 | Finance + department VP | Two approvers, budget owner sign-off required |
| Over $50,000 | CFO or designated executive | Additional documentation expected |
Where matrices go wrong
The most common failure isn't having no matrix — it's having too many tiers. A matrix with six approval levels for routine spend doesn't add control, it adds a bottleneck, and people learn to route around it. The second most common failure is no backup approver, so a single person's absence stalls every invoice above their tier. The third is a matrix that was correct two years ago and was never updated as the team grew — approvers left, thresholds never moved with inflation or growth in spend volume, and nobody owns keeping it current.
How Vyomiyra helps
Once a matrix is defined, the harder part is making sure it's actually followed every time — not just when someone remembers to check. Vyomiyra routes each item to the correct approver automatically based on the rules you set, with a documented backup path, so the matrix is enforced by the workflow instead of by memory.