Go to the gear icon, then Account and Settings > Advanced, find Currency, and edit your Home Currency. That part takes thirty seconds. The catch: QuickBooks only lets you do this once, and only before a single transaction exists in the company. Once you've saved anything, the field locks for good.
1. Head into your company settings. Click the gear icon in the top right, then Account and Settings.
2. Go to the Advanced tab. Scroll down to the Currency section.
3. Click the pencil icon next to Home Currency. QuickBooks will warn you here if you've already entered any transactions, that warning is your signal this isn't going to work.
4. Select the correct currency from the dropdown. This becomes the currency every report, invoice, and balance in the company defaults to.
5. Save. If you're still inside the no-transactions window, the change applies immediately across the whole company.
QuickBooks treats home currency as foundational, every report, every balance, every historical number assumes it from the start. Letting someone change it after transactions exist would mean retroactively reinterpreting everything already on the books, so Intuit just blocks the change outright instead of trying to convert it after the fact.
If a company's already set up wrong with real transactions in it, there's no in-place fix. The honest answer is a new company file with the correct home currency, followed by migrating or re-entering the chart of accounts, customers, vendors, and open balances into it, which is tedious but reliable.
When a business is stuck with the wrong home currency, the chart of accounts, customers, vendors, and open balances get pulled out and rebuilt in a correctly configured company automatically, instead of someone re-keying all of it by hand.
Once multicurrency's turned on, transactions where the day's real exchange rate differs meaningfully from what QuickBooks pulled in get flagged for a person to double-check, instead of quietly going through at whatever rate QuickBooks happened to grab.
Tell us how far along the company already is, and we'll tell you honestly whether a rebuild or a workaround makes more sense.
Tell us whether you've entered transactions yet, and we'll tell you honestly what your actual options are. Currency setup is one specific example of a QuickBooks configuration that's hard to fix after the fact; n-frames deals with whatever's manual or stuck in a business, this included.
Let's talk →Same screen: Account and Settings > Advanced > Currency, then toggle on Multicurrency. This is a different setting from home currency; it lets you track transactions, customers, and vendors in currencies other than your home one. Like home currency, it also can't be turned off again once it's on.
It works the same as reconciling any account, matching your statement balance to QuickBooks, but exchange rate movement between transactions can leave small gains or losses that need their own entry to clear. QuickBooks tracks the account in its native currency and converts for reporting using the home currency exchange rate.
No. Once even one transaction exists in the company, the Home Currency field in Account and Settings locks permanently, with no built-in override. The only real fix at that point is setting up a new company file with the right currency from the start.