Limits are set by regulators. Although bitcoin transactions are not (yet) regulated as such, bank card transactions are, therefore, we must fully comply with KYC (Know Your Customer) and AML (Anti-Money Laundering) policies.
We give you the choice between using an unverified or verified account. If you are happy with the lower limits and limited top up options, you don't have to verify the account by providing your documents. If you want to increase your Wirex limits and enjoy our services in full, you need to provide your proof of ID (POI) and proof of address (POA). You can read more about the verification process in our How and why to verify your Wirex account? article.
NOTE: In some instances, you may be obliged to verify your Wirex account per Fraud&Risk team request.