Stored procedure result into temp Table getting null values in 1st Row

See more:

SQL-Server

SQL-Server-2008

I have created stored procedure to get tax name with amount when I execute query from window it gives proper result but While storing result of this into temp table it doesn't show proper result as well as there null row comes in result.

ALTER PROCEDURE spGetTotals
	-- Add the parameters for the stored procedure here
	@Id uniqueidentifier
AS
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;

    -- Insert statements for procedure here
	Declare @SubTotal Decimal(10,2)
	SET @SubTotal = (SELECT SUM(Cost) From InvoiceItem WHERE InvoiceId =@Id)
	
	SET @SubTotal += (SELECT SUM(Charges) From Invoice_ExtraCharge WHERE InvoiceId=@Id)
	
	CREATE TABLE #TaxAmount
	(
		TaxName varchar(50),
		Charge Decimal(10,2)
	);
	
        --using stored procedure 
	INSERT INTO #TaxAmount
	EXEC spGetTaxAmountForTallyByInvoiceId @Id;
	
	select * from #TaxAmount
	DECLARE @Total As Decimal(12,2)
	SET @Total = @SubTotal-- + (SELECT SUM(Charge) FROM #TaxAmount)
	
	Select @SubTotal As SubTotal,@Total AS Total
END
GO

This my Query to use stored procedure. So I got 1st column null for both columns and result which I get in 2nd row in also wrong