Is there a limit to the amount of GMP you can have at any one time?

As per the title, is there a cap on GMP (money)? If so, what is the limit?
I am on just over 4 million at the minute and don't really like spending money if I don't need to, but if there is a limit I might just buy random stuff if I start getting close to it.
Best Answer
OK, so it just so happens that I was pretty close to the limit already. The limit appears to be 5,000,000 (5 million) GMP.
I noticed I had exactly that amount and then when I went to accept some GMP as part of a completed combat deployment mission, the following message was displayed:
Unable to accept all rewards. You have reached your maximum item capacity.
Yes I know it says "item" but after closing that dialog, there are two unclaimed rewards still listed, both of which are GMP.
It seems quite a low limit as I now have 440,000 in rewards waiting to collect. Would be interesting to know if those rewards will expire or if I can keep them there until I need the money. Though I think I will just spend some cash and claim them to be safe
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MGSV- How to make 4.5 mil GMP in less than 15 mins!!!
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