I mentioned this within another topic, but posting it in a thread of its own so that it doesn’t get buried!
I would really like to be able to do bill splits for payments on my connected cards (i.e. I buy coffee for myself and my partner on my new AMEX card and want to request half of the money from his Monzo account). It would be helpful to do this in some form for pending payments as well, so that I can request straight away and not risk forgetting!
And to add to shared tabs!
Not critiquing how you live your life, but do you honestly do this?
I’ve updated the title to include shared tabs as well 
This exact example rarely, it is more likely to be paying for meals for myself and three friends and then doing a bill split. etc My finances are separate from my partner so whilst I don’t mind occasionally buying him a coffee, I am not going to pay for it every day (I do get coffee far too regularly!) Anyway…
Exactly what I was looking for here. It’s hard to organise my shared tabs when I use my AMEX.
I do this 
I have a amex card with my gf as a supplementary cardholder and then we add everything to a shared tab so that it can be paid off each month and we get the avios points/travel companion voucher.
So being able to bill split/shared tab a connected card would be the thing that makes me get plus, until that comes im on the fence
This was my biggest surprise and disappointment after getting Mono Plus - the fact that you can’t add transactions from non-Monzo cards to Shared tabs.
I’m making huge assumptions, but, from my point of view, the implementation of this feature wouldn’t require crazy amounts of new infrastructure:
wow Guess I’ll never be paying for monzo then, this is literally the only feature I want
this is so annoying. I’m with barclays and they don’t have this functionality within their app so I would actually pay monzo to let me split bills on their app as this would basically mean I can actually use one app to manage all my money.
Maybe I’m missing something, but if it’s so important to you then use Monzo instead of Barclays?
Let’s hope it comes along soon. It’s always useful for Monzo to hear this sort of feedback - thanks for sharing!
Is there any update on this? I have multiple shared tabs and especially for holidays/big purchases this feature is needed. In terms of AMEX it would make managing finances easier as at the moment it’s a manual process.
Not seen any update for a while. Still been waiting years just to have the ability to add a note to a bill split (which still isn’t there) so maybe a few more years until this happens. If at all…
Also requesting this. Would be extremely useful
I prefer to use my Amex on certain things for the reward points and I love that I can see my payments in the Monzo app, but I really would love to make a money request based on a transaction on my Amex seen in the Monzo app.
Perhaps a button to request money (either that amount or a split or custom as you do with Monzo bill split). Then the subject line can suggest where the payment is from. This would sort out a lot of my payment-splitting headaches where Amex is my preferred card.
Unfortunately, reward points don’t come from using my Monzo debit, but I’m happy to use it to receive income and sort money, but this feature for other accounts would be a game changer! To be frank, if this feature request doesn’t go anywhere, I will still use my AMEX for points over Monzo regardless of built-in split payments.
THIS! Was so shocked that it isn’t offered. I just have to create custom duplicates which just complicates things.
Big +1 for this feature.
This is very needed!
I just realised this has been added now and so I’ve upgraded to the 7£ monthly plan