Receiving USD payments and recording in CAD on QBO - end of year balance totally off

Hi there,

I have clients in the UK and in the USA - and receive funds into my bank accounts in USD and GBP. 

These get pulled into QBO and my bookkeeper has them converting to CAD.

I realise now at the end of the year, that each time the transaction was made, it converted to CAD at the rate back then.

But most of the money has stayed in USD in my accounts, so the currency exchange wasn't actually done. 

So now at year end, I look at my accounts and my invoices reflect around 20k LESS than what my QBO is showing. Because the currency has gone down,

How do I reconcile for this at year end to avoid paying more taxes than I physically have in my account, because the currency exchange rates have changed?

Thank you!