Do you mean a batch job or cron job which sends payments every month to a particular address for example?
If so, as far as I know there is not such a service yet. But it is not hard to program, if you urgently need it.
because of this
I would like to be able to pay my suppliers by uploading a file with say account/btc address/amount from my accounts system.
i think OP means
Pay to Many feature in a wallet, and he wants to make a payment to many recepients by doing this, kind of similar to what signature campaigns do.
and this feature (with the name i said) is available in all the wallets that i have checked so far.