Ann: Market Update, page-4

deferred consideration is capped at $6.5m ($1.3m scrip and $5.2m cash).

calculated as 8 x FY19 EBITDA being $1.4m to $1.6m minus the upfront payment of $5.5m

which is why the debt facility is going to be increased:
"Given the strong performance of Ikon, an earn-out payment is required to be made to thevendors of Ikon. The Company intends to fund the cash portion of the earn-out paymentthrough existing cash reserves and an increase to its existing debt facilities"