Tax code to use for this entity. If a FulcrumProduct.PublicApi.Dto.Quote.FeeLineItem.QuoteFeeLineItemDto.TaxCodeId is provided and FulcrumProduct.PublicApi.Dto.Quote.FeeLineItem.QuoteFeeLineItemDto.OverrideTaxRate = true, the provided FulcrumProduct.PublicApi.Dto.Quote.FeeLineItem.QuoteFeeLineItemDto.TaxRate will supercede the defined tax rate.