if then statement help

Hello all,

I am trying to create an if /then statement on a sales agreement that needs to calculate different amounts of tax based on the amount of the sale. I don't know if I am using the wrong field names or what but I keep getting syntax errors.

We have a 6% sales tax with an additional Education tax of .5% up to $5000. Everything over $5000 is a 6% tax. The name of the cell that has the value of the subtotal of the sale in it is called SubTotal, the "Tool tip" name is "$_Row_1"

Here is my equation description:

I want to calculate the amount of tax to charge based on the amount in the "SubTotal" cell.

If statement: If cell named SubTotal is < $5000

If True:  then SubTotal * 6.5% (.065)

If False (greater than $5000):  then subtract $5000 from the SubTotal amount and multiply it by 6% (.06) and add $325 ($325 is 6.5% of the first $5000)

Here is what I put in the calculation field for "Sale Tax":

if(SubTotal<5000, SubTotal*.065,
((SubTotal-5000)*.06)+325)

What am I doing wrong? Thanks in advance for your help.