Thanks Peter, so we just take cash in and out in $ notes rather than Peso.
We here in Aust can leave the country with up to $10k in cash before declaring it, so this will be ok to take into the Philippines.
That's what we do/did. US$ are the easiest to exchange I have found, especially in the "Provinces".
As long as you don't have more than US$9,999 or the equivalent, in cash, you don't have to declare it on arrival in the Philippines. i was told that 9,999 is OK, but 10,000 must be declared. Others may have a different experience.
One thing that came up some years ago was (and I don't know if it still is current, so you may have to check) the 10,000 limit was total for all family members travelling together. They classed "together" as when the tickets were paid for with the same credit/debit card, or with cash at the ticket issuing travel agency, at the same time. With the introduction of etravel itineraries showing multi-ticketed passengers, things may have changed.
i only take 4 or 5,000 in Peso cash when we leave here on holiday. That's just enough to cover any unexpected ex's, to get home, if we return and it's at "dark o'clock" in CRK or NAIA. (CRK parking charge, flat battery etc. etc.)
Peter