Code to get the Actual sales tax amount for a salesLine in D365F&O X++

public static void main(Args _args)

{

   SalesTotals           salesTotals;

   TaxAmountCur      taxAmountCur;

   SalesTable              salesTable = SalesTable::find("000811");

   salesTotals = SalesTotals::construct(salesTable);

   salesTotals.calc();

   salesTotals.tax().sourceSingleLine(true, true);

   taxAmountCur    =   salesTotals.tax().totalTaxAmountSingleLine(tableNum(SalesLine), 68719676632, true, false); //salesline recid

   Info(strFmt("%1",taxAmountCur));

}

SalesLine>Financials>SalesTax

 

Reference link : https://community.dynamics.com/forums/thread/details/?threadid=3662fb97-0b10-4d8c-b3c4-cd2a4d64018a