Payables Recurring Invoice getting Inclusive Tax

Even though we set defualt tax as Exclusive, at tax configuration, Supplier Tax Details.......... but recurring invoice is creating invoice with inclusive tax:

Example:

I have created Recurring invoice for 4 periods for 10,000 USD

When i generate invoice#1 for 2500,

in create invoice form under Tax info it is showing as

Oreiginal Invoice 2500

Tax: 227.27

Gross Amount : 2727.27

(wonder tax should be 250 not 227.27)

But finally when invoice got created for 2500 gross

with line as 2272.23 + Tax as 227.27

Any help on this is appreciated

Regards

Jithendra