Direct with a state company. My IP is 6%, and they don't want to pay directly to Yandex. How to be?

Question

Law in IT

Hello.
I am concluding a contract for direct management with a state-owned company.
I am an individual entrepreneur, on a simplified 6%. That is, I pay taxes on the proceeds, not on the profits.

How I wanted to work: they pay me for campaign work. And the money for the advertising budget goes directly to Yandex (Yandex has an offer agreement).
And they say: there should be one entry point. That is, to pay money to only one company (there is something about inspections and the law on public procurement).
And I don’t need their money on my account, so that later I can transfer it to direct. Especially since I have to pay taxes on them.

And what do you usually do in such situations?

Answer 1

There is only one way out - include this% of the tax and the cost of the direct in the cost of services as a variable part of the contract estimate.

Answer 2

Question: tell us how you managed to conclude a contract with a state-owned company?
Unfortunately, you have no other option.

simplified 6%. That is, I pay taxes on the proceeds, not on the profits.

Direct is generally a dangerous thing in terms of taxation, even if you were on income and expenses.
Alternatively, you can conclude a commission agreement and then happiness will come to you. Only this contract needs to be done by a lawyer, and not riveted from the Internet.