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DT Max - Canadian T1, T2 and T3 tax software for income tax returns   

The new product can be installed on a personal computer and uses the same easy-to-learn method and tax calculation engine as UFile.ca, the online product. ......

VirtueMart Developer Portal   

I have a store in California (CA), USA, by law I have to charge tax 8.25% from CA customers, all other states are tax free. ......

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