Time zone and currency are two of the only settings in Ads Manager you genuinely cannot change once an ad account has started running ads. Get them wrong and the fix is creating a new account, not editing a setting — which makes this a five-minute decision worth making carefully at setup.
Why these settings are locked
Meta locks time zone and currency at ad account creation because they're baked into every downstream calculation: daily budget pacing, reporting windows, and billing all key off these two values. Changing them retroactively would corrupt historical reporting and billing records, so Meta simply doesn't allow it after the account has meaningful activity.
This means the decision has to be made correctly at account creation, ideally before the account has ever spent — for agency-provisioned accounts, confirm both settings with your provider at handoff, before you launch anything.
Choosing a time zone
Pick the time zone that matches how your team thinks about a 'day' for budgeting and reporting purposes — usually your own operating time zone, not necessarily your audience's. Daily budgets reset at midnight in the account's time zone, so a mismatch between account time zone and your team's working hours creates confusion around when budgets actually reset and when a day's performance is final.
For agencies running accounts across many clients in different regions, standardizing on one time zone across your whole portfolio — usually the agency's own — makes cross-account reporting and daily monitoring dramatically simpler than having every account on its client's local time zone.
Choosing currency
Currency should generally match the currency you're actually billed in and the currency your business reports revenue in — this avoids constant mental or spreadsheet conversion when reconciling ad spend against revenue. If you're running an agency account funded through a provider's payment method, confirm which currency the account is actually set to, since it affects how spend appears in your reporting relative to revenue in a different currency.
For businesses operating across multiple countries with different local currencies, decide deliberately whether to run separate accounts per currency or consolidate in one currency and treat exchange rate movement as a reporting adjustment — there's no universally correct answer, but it needs to be a decision, not a default.
- Time zone affects daily budget resets and reporting day boundaries — pick your team's working zone
- Currency should match your billing and revenue-reporting currency where possible
- Both settings are permanent once the account is active — confirm before first spend
- Standardize time zone across your portfolio for agencies managing multiple accounts
What to do if you got it wrong
If an existing account has the wrong time zone or currency, the only real fix is creating a new ad account with the correct settings and migrating campaigns, creative, and audiences to it — there's no in-place correction. This is disruptive but far less costly the earlier you catch it, before significant spend and historical data accumulate on the wrong account.
Treat this check as a mandatory step in account setup going forward, and specifically confirm it any time a new account — owned or agency-provisioned — is added to your portfolio.
Getting it right from day one
Because this decision can't be undone, Power Ads confirms time zone and currency preferences with every new client before agency accounts are provisioned, rather than defaulting to a generic setting and leaving the client to discover a mismatch weeks into scaling.
Key takeaways
- Time zone and currency are locked permanently once an ad account is active
- Choose time zone based on your team's working hours, not just audience location
- Match currency to your billing and revenue-reporting currency where possible
- The only fix for a wrong setting is a new account and full migration — confirm before first spend
FAQ
Can I change my ad account's time zone later?
No, not once the account has meaningful activity — it's set permanently at creation, so it needs to be correct from the start.
What currency should an agency-provisioned account use?
Confirm this with your provider before launch — it should generally align with the currency you use for revenue reporting to keep reconciliation simple.
