How can I resolve inventory and tax issues with my accounting app?

[HougaardMalan]

Hi There

We have a direct sales and distribution business and we use Sufio to invoice our wholesale customers and those who don't want to checkout by themselves. 

We have two problems - 

Sufio doesn't subtract the invoiced items from the inventory (despite it saying they have inventory functionality) and their export options are super basic. We can't pull anything like a monthly sales report with cost of sales or inventory value. 

This is further complicated by VAT/GST/Sales tax. 

I have received plenty of recommendations for Xero, but their info page for the shopify app says they don't have VAT functionality on Shopify, or am I missing something?

Any advice is greatly appreciated!

Hougaard, Cape Town