# Sort codes **URL:** \ **Category:** Help\ **Created:** [19 September 2023 17:58 UTC](https://community.monzo.com/t/sort-codes/153594 "2023-09-19T17:58:58Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Leonw5505](https://avatars.discourse-cdn.com/v4/letter/l/bb73d2/32.png) [@Leonw5505](https://community.monzo.com/u/Leonw5505)\ **Post date:** [19 September 2023 17:58 UTC](https://community.monzo.com/t/sort-codes/153594/1 "2023-09-19T17:58:58Z")
My work automatically fills out the sort code in the payment details when I select Monzo, however it does this with the sort code 04-00-03 when mine is 04-00-04, will this affect me getting paid at all ? Is it fine to just leave it or should I be asking work to change it ? ---
**Author:** ![Nightpaws](https://dub1.discourse-cdn.com/monzo/user_avatar/community.monzo.com/nightpaws/32/71188_2.png) [@Nightpaws](https://community.monzo.com/u/Nightpaws)\ **Post date:** [19 September 2023 19:16 UTC](https://community.monzo.com/t/sort-codes/153594/3 "2023-09-19T19:16:13Z")
If the sort code is incorrect this will almost certainly mess up your pay. Ask them to change it to be safe and that way you’re in the right. Hopefully you’ve long enough till your payday to get it sorted. ---
**Author:** ![anon95680666](https://avatars.discourse-cdn.com/v4/letter/a/e9a140/32.png) [@anon95680666](https://community.monzo.com/u/anon95680666)\ **Post date:** [20 September 2023 06:31 UTC](https://community.monzo.com/t/sort-codes/153594/4 "2023-09-20T06:31:07Z")
> [@New Monzo Sort Code](https://community.monzo.com/t/new-monzo-sort-code/142830): > > Joined back with Monzo (so happy too) but has anyone else noticed they have a new sort code. The usual one we all know is 04 00 04. However the new sort code on newer accounts is 04 00 03. Bear in mind some companies haven’t updated their systems so may say this is incorrect, however it is on the UK Sort Code Checker system and does work, the companies who question the authenticity just need to update their systems. > [@New Monzo Sort Code](https://community.monzo.com/t/new-monzo-sort-code/142830/28): > > The only sort codes available to the public at present are 04-00-04 and 04-00-03 (as we’ve exhausted the account numbers available on 04). The other sort codes are mostly used for testing and stuff smirk messages from the same thread but the bottom reply is from staff member the sort code does exist , but if your account with monzo is 04-00-04 on your card details it should say that on your payment details ---
**Author:** ![Dan5](https://dub1.discourse-cdn.com/monzo/user_avatar/community.monzo.com/dan5/32/45125_2.png) [@Dan5](https://community.monzo.com/u/Dan5)\ **Post date:** [26 September 2023 13:25 UTC](https://community.monzo.com/t/sort-codes/153594/5 "2023-09-26T13:25:04Z")
We don’t reuse account numbers - so an account number on the 04-00-04 sort code won’t exist on the 04-00-03 sort code ☺ ---
**Author:** ![Dan5](https://dub1.discourse-cdn.com/monzo/user_avatar/community.monzo.com/dan5/32/45125_2.png) [@Dan5](https://community.monzo.com/u/Dan5)\ **Post date:** [26 September 2023 18:51 UTC](https://community.monzo.com/t/sort-codes/153594/7 "2023-09-26T18:51:16Z")
No - there are lots of account numbers that we can’t use on the 04 sort code, for example we don’t give consecutive account numbers out on the same sort code. ---
**Author:** ![gt94sss2](https://avatars.discourse-cdn.com/v4/letter/g/ee7513/32.png) [@gt94sss2](https://community.monzo.com/u/gt94sss2)\ **Post date:** [27 September 2023 03:16 UTC](https://community.monzo.com/t/sort-codes/153594/8 "2023-09-27T03:16:25Z")
All UK banks use Modulus Checking to confirm if a particular sort code/account number is possibility valid. > **[Sort Codes Modulus Checking](https://www.sortcodes.co.uk/modulus-checking)** > > Modulus Checking is a technique for implementing a mathematical algorithm to a bank account Number (or an account number and Sort Code incorporation) to verify that it is valid for a specific variety of sort codes.