> ## Documentation Index > Fetch the complete documentation index at: https://docs.budgetbandit.io/llms.txt > Use this file to discover all available pages before exploring further. # Tags > Create custom tags and apply several to a single transaction to track things that cut across categories. Tags are cross-cutting labels. Unlike a category — where a transaction has one — you can put many tags on a single transaction. Use them for things that span categories: a vacation, a project, a reimbursable expense, a tax write-off. ## Create a tag Open the **Tags** page and type a name in the create field — for example "Vacation 2026" or "Reimbursable" — then add it. A tag name can be up to 60 characters. You can give it one of eight colors, or leave it uncolored. ## Apply tags to a transaction * **One transaction:** open the transaction and use its tag picker to add or remove tags. You can create a new tag inline while you're there. * **Many at once:** select transactions and use [bulk actions](/transactions/bulk-actions) → **Tags**, then **Add** or **Remove**. * **Automatically:** a [rule](/rules/create-a-rule) can add tags to transactions that match its conditions. ## Filter by tag The Transactions [filter bar](/transactions/flags-search-filter) has a tag filter. Pick one or more tags to show transactions that carry **any** of them. This is how you total up a trip or a project: tag the transactions, then filter to the tag. ## Rename, recolor, or delete a tag On the Tags page: * **Rename** — click the tag name, edit it, and save. The change applies everywhere the tag is used. * **Recolor** — pick a color swatch (or none). * **Delete** — removes the tag from every transaction it's on. This can't be undone. ## Merge tags Built up duplicates like "Vacation" and "Vacation 2026"? Select two or more tags and choose **Merge** to combine them into one, keeping every transaction's labeling intact. ## Tags vs categories vs flags * **Category** — the one envelope a transaction's money comes from. Every budgeted transaction has exactly one. * **Tag** — a free-form label; a transaction can have several. * **Flag** — a single color marker for quick visual sorting. See [Flags, search, and filters](/transactions/flags-search-filter). ## If something looks wrong * A tag total looks off → confirm every transaction you meant to include carries the tag, then filter by it. * A tag you deleted is gone from transactions → that's expected; deleting a tag removes it everywhere. ## Related Flag, find, and filter — including by tag. Add or remove tags across many transactions. Add tags automatically by condition. The one-category-per-transaction side of the story.