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Hi Susan, which amount should I pay to the CRA for now? I have transferred the amount mentioned by TurboTax the moment I did my NetFile ($5,473.48), but on the Express NOA it says $6,198.46.  Should I transfer the difference now (before Apr 30 deadline) or wait until I get the actual Notice of Assessment in a few weeks's time?  And what does it mean by "We changed your total payable from $6,649.16 to $7,363.99 because of a calculation error."? I thought that Turbotax guarantees that there are no calculation errors?  Thanks!