Determine Tax on a Date Other Than Invoice Date

The tax rate is our country increased from 14% to 15%. Tax is determined based on the date of supply of the goods and/or services and not the date of the invoice. This scenario applies to both customer transactions (where we bill our customers) as well as supplier transactions (where our suppliers bill us for goods/services). For example, let's assume the tax rate increase was effective 01-JAN-2019, we may be billed for utilities today which relate to the period JUL-2018 and the sales tax would be 14% on the invoice. We could also be billed for utilities today which relate