How-to guides
Set up expense rules
By the Mylo team · Last updated June 30, 2026
Rules clean up and categorize expenses the moment they're created.
- Open Settings → Expense rules and tap New rule.
- If you're an owner or admin, choose the scope: Just me or Whole organisation.
- Enter the merchant text to match, e.g.
Starbucks. - Fill in the updates to apply (merchant name, category, description, customer, reimbursable, billable, add to a report) and tap Save rule. A blank action leaves that field as is.
- From then on, every new expense whose merchant contains that text gets the updates applied automatically, on every entry path.
- Let Mylo write rules too: when an expense for a first‑time merchant is approved, a suggested org rule (clean merchant name + the approved category) appears in the Suggested section for owners, admins, and connected accountants.
- Tap Accept to activate a suggestion, or Dismiss it and that merchant is never suggested again.
- To skip the review step, an owner or admin can turn on Activate auto‑learned expense rules immediately in Organisation settings (off by default).
Good to know:
- Rules shape new expenses only; they never rewrite expenses you already filed.
- When an org rule and your personal rule both match, yours wins on your own expenses.