The alliance we have with an experienced practicing CPA is another unique advantage we offer our clients at PAYSTUB SERVICES. We maintain offices in the Castro Building which is home to the Castro Accountancy Corporation. The alliance we have with an experienced practicing CPA is another unique advantage we offer our clients at PAYSTUB SERVICES. We maintain offices in the Castro Building which is home to the Castro Accountancy Corporation. The alliance we have with an experienced practicing CPA is another unique advantage we offer our clients at PAYSTUB SERVICES. We maintain offices in the Castro Building which is home to the Castro Accountancy Corporation. The alliance we have with an experienced practicing CPA is another unique advantage we offer our clients at PAYSTUB SERVICES. We maintain offices in the Castro Building which is home to the Castro Accountancy Corporation. The alliance we have with an experienced practicing CPA is another unique advantage we offer our clients at PAYSTUB SERVICES. We maintain offices in the Castro Building which is home to the Castro Accountancy Corporation.