Working Subcontractors

Working Subcontractors

How Do I Pay My Quarterly Voucher?

Once you have received your invoice, there are several different ways of paying.

Our preferred method of payment is via BPAY. Simply log on to your online banking service to pay your voucher via BPAY - the BPAY Biller Code & Reference will be included on your invoice.

Other methods of payment include Credit Card (Visa or MasterCard only), EFT, or cheque.

Your BPAY reference is unique to each invoice you pay and changes each time. Please make sure you use the correct invoice ID for the specific invoice which you are trying to pay: using an old or incorrect reference or invoice ID could result in your payment not being processed.

Please note, if you are an employer enquiring about paying WDW contributions on behalf of your workers, click here.

Interest Rates

Interest is accrued on voluntary contributions for Working Subcontractors; the interest is calculated and credited every month, based on the entire balance of your contributions plus any previously accrued interest. The interest rate for subcontractor contributions for financial year 2019/2020 is 7.28%. Interest rates are set yearly in advance by the CoINVEST Board of Directors.

Interest is only paid on long service leave claims once you have accrued seven or more years of continuous recorded service.


If you would like a refund of your voluntary contributions before you have accrued the required seven years of continuous service, you will be entitled only to a refund of the contributions you have put in; you will not be entitled to any accrued interest component. All requests for refunds must be made to CoINVEST in writing.