> For the complete documentation index, see [llms.txt](https://doc.moze.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.moze.app/credit-card/statement-combined.md).
# 主帳戶 🔖
當你有同一家銀行多張信用卡時（例如玉山銀行的 U Bear / Only / Pi），通常會合併成一份帳單給你繳納。你可以從**主帳戶**這個欄位去新增一個主帳戶，然後把相關信用卡帳戶都歸類在這主帳戶底下。
建立好後你就可以在帳戶總覽上看到主帳戶中包含子帳戶的階層架構，可用額度也會自動合併計算。
點進去主帳戶，可以看到涵蓋所有信用卡的花費統計，你也可以直接進行對帳和繳費。
點擊上方標題列，可以自行切換到各個子帳戶下查看對應的花費明細。
### 幾個操作建議
1. 一般帳戶的主帳戶跟信用帳戶的主帳戶是彼此互斥的，你不可以把一般帳戶放入信用主帳戶下，也不能把信用帳戶去放到一般主帳戶下。
2. 以信用主帳戶來說，它裡面涵蓋的子帳戶幣種，必須都要跟主帳戶的幣種一樣。如果像是常見的「熊本熊卡」或是「幣倍卡」，它們是以外幣當作主幣種，那就不建議一起放在同一個主帳戶下，因為主帳戶在計算時，就有可能出現匯差問題造成當月計算餘額跟下個月不一致。
3. 那如果是同一個銀行的外幣信用卡，雖然你不能放進主帳戶下，但是你還是可以把信用額度共用到同一個銀行的信用卡上，這樣也不用擔心可用額度的計算會有問題。
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