Margin on a currency swap

[Oracleyoda]

David,

I would like to confirm my logic on this topic.

If I were creating a swap for a client;

Client pays AUD and recieves USD (Client is Australian hedging USD Loan) both rates are fixed.

Clients loan is 125Bp above the fixed swap rate. I want to add 125 Bp to the USD side of the swap to match their interest cash flow perfectly.

What is the best method to calculate the corresponding A$ fixed rate?

Thanks
Wayne