# Change From Dollar Approximate Separate Transactions Method of Accounting (DASTM) to the Profit and Loss Method of Accounting/Change From the Profit and Loss Method to DASTM
> **IRS** · Final regulations. · Published 1998-03-05 · Effective 1998-04-06 · 63 FR 10772
## Document
- **Document number:** 98-5470
- **Category:** tax-irs
- **Sub-agency:** IRS
- **Federal Register citation:** 63 FR 10772
- **CFR reference:** 26 CFR 1
- **Publication date:** 1998-03-05
- **Effective date:** 1998-04-06
- **Treasury docket:** TD 8765
## Abstract

This document contains final Income Tax Regulations relating to adjustments required when a qualified business unit (QBU) that used the profit and loss method of accounting (P&L) in a post-1986 year begins to use the dollar approximate separate transaction method of accounting (DASTM) and adjustments required when a QBU that used DASTM begins using P&L. The regulations provide rules for taxpayers to construct an opening dollar balance sheet for the QBU and require income adjustments in certain cases.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/03/05/98-5470/change-from-dollar-approximate-separate-transactions-method-of-accounting-dastm-to-the-profit-and)
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