A charity trust is diff to maintained...how abt a Corp trust which deviate from a norm biz.....example :🎉 Lee kum kee (oyster sauce) set up a LKK trust to do estate. Since estate is not their main business they set up a trust with a high maintained fee as what u hv mentioned above to allow the trustee who have more exp to look after their side biz ...my 2 cents worth and humble view