Yes. It would perfectly suit your requirement.

thanks and regards,

vinoth s 

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From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Carolyn Green
Sent: Wednesday, September 10, 2008 11:06 AM
To: rules-users@lists.jboss.org
Subject: [rules-users] drools appropriate for calculating uk tax

I'm currently studying uk tax, and I was wondering whether drools would be suitable for calculating an individuals tax liability.

There are lots of rules such as:

if age < 65
then
  allowance = 5225
if age >= 65 and age < 75
then
  allowance = 7550 - ((net income - 20,900) * 0.5)
  if allowance < 5225
    then allowance = 5225
if age >= 75
then
  allowance =7690  - ((net income - 20,900) * 0.5)
  if allowance < 5225
    then allowance = 5225

if 1=1 (run always)
  // calculate taxableOtherIncome (earnings, trading profits)
  taxableOtherIncome = otherIncome - allowance
  allowanceUsed = taxableOtherIncome - otherIncome
  allowanceRemaining = allowance - allowanceUsed
  allowance = allowanceRemaining

  // calculate taxableSavingsIncome
  taxableSavingsIncome = savingsIncome - allowance
  allowanceUsed = taxableSavingsIncome - savingsIncome
  allowanceRemaining = allowance - allowanceUsed
  allowance = allowanceRemaining

  // calculate taxableDividendIncome
  ...

There seems to be a fairly strict order to some of the calculations.  I.e. allowance should be deducted from otherIncome before savingsIncome or dividend income.

Is drools suitable for this type of application?

Many thanks,

Chris

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