Daily Valuation and P&L Sign-Off

This work comes up when the P&L that traders watch during the day is checked again at the end of the day by a unit that does not trade, and then goes into reports to management.

Why a unit independent of trading checks the P&L

Trading profit and loss is not taken as it comes from the front office (sales and trading). A unit that does not trade recalculates and checks it every day. According to the February 1998 section of the US Federal Reserve Board (FRB) examination manual (the "examination manual" below), management used P&L to weigh a business's results against its risks. P&L was sometimes also used to set the pay of traders and sales staff¹. If the people who trade could set their own P&L, errors and fraud could hide in the figures.

Weak valuation procedures leave more room for fraud and cast doubt on whether trading profits are real. The common weaknesses are inadequate segregation of duties between traders and control staff, and relying too heavily on traders' inputs without independently checking the inputs used for valuation². When the front office and the control units disagree on valuation assumptions or methods, financial reports and the assessment of market risk are also wrong³.

Rules of the UK Prudential Regulation Authority (PRA) require firms to revalue trading book positions at fair value at least daily and to report the changes in value in their profit and loss account⁴.

From finalizing market data to reporting the P&L

Daily valuation and P&L start with finalizing the market data at the end of the day and end with reporting the signed-off P&L. Based on the examination manual, the work falls into the five steps below. Which units handle the steps, and what they are called, differ between institutions. The unit that checks the P&L is called product control (the unit that validates P&L and valuations), following the name the UK Financial Services Authority (FSA) used in its 2012 Final Notice to UBS⁵.

Figure description

This is the flow of work for signing off daily valuation and P&L. The front office watches the value of its positions during the day. The unit that verifies P&L (product control) finalizes the end-of-day market data, calculates values and daily P&L, and compares them with the front office's P&L. It investigates and records the reasons for any differences, then explains the breakdown of the P&L. Finally, senior management and others receive the report of the signed-off P&L. The P&L that is signed off is not the front office's estimate but the P&L calculated by a unit that does not trade.

1. Finalize the end-of-day market data. Positions are usually valued as of the close of business, using market prices that are independent of the front office. As a rule, the prices come in through automated feeds. Prices that cannot be fed in are entered by control units in the middle office (risk management and similar functions) or the back office (operations and settlement), not by traders. Traders may still take part in setting the prices⁶. The valuation policy states which point in time counts as the closing price⁷.
2. Product control calculates the value of positions and the daily P&L. It aggregates positions from the trades recorded in trade capture. Positions with observable market prices are valued at those prices, and illiquid positions without them are valued with models¹. Products that trade rarely and are hard to value even with a model may be valued weekly or monthly, and the policy sets out which trades are left out of daily valuation⁶. How trades are entered and checked is covered in Trade Capture and Approval.
3. Product control compares its figures with the front office's P&L. Traders produce valuations during the day to watch their positions, and control units produce them again each day to check the effect on P&L. Differences between traders' inputs and independent market prices are traced to their cause, resolved, and documented³. Positions and P&L are reconciled with both the front office records and the general ledger (the firm-wide books)⁸.
4. A unit independent of the traders, such as product control, explains the breakdown of the P&L. It splits the daily P&L by source and checks where the P&L came from (see the next section)⁹.
5. An independent control unit reports the signed-off P&L. It prepares daily P&L breakdown reports and official month-end P&L reports and sends them to senior management. Trading desk managers receive daily reports that include the P&L of new trades¹⁰.

P&L explain

P&L explain is the work of breaking daily P&L down into sources such as market moves, the passage of time, and new trades, to show how much of the P&L came from where. Being able to show correctly where daily P&L came from is one of the key controls for checking that valuations are sound¹¹. A large unexplained P&L, or an unusual breakdown, may mean that the valuation process is flawed and that reported profit is overstated or understated. It may also mean that positions carry risks that have not been identified. The P&L attributed to sources is called explained P&L, and the difference between actual P&L and explained P&L is called unexplained P&L⁹.

$$\text{Unexplained P\&L} = \text{Actual P\&L} - \text{Explained P\&L}$$

Consider a hypothetical example in which the P&L of one interest rate swap desk over two days is broken down by source. Assume that the desk investigates the cause whenever the size of unexplained P&L (whether positive or negative) exceeds 1 million yen.

On day 1, interest rate moves produce a profit, and unexplained P&L is 500,000 yen, within the threshold. On day 2, interest rate moves produce a loss, and unexplained P&L is −4 million yen, beyond the threshold, so the cause is investigated. Depending on the findings, the model may be changed, or the choice of valuation inputs such as volatility and correlation may be reviewed⁹. The threshold for investigation differs between institutions, and some leave it to the responsible unit to judge case by case without setting an amount⁹.

How finely the P&L is split depends on the risks the desk manages. In the examination manual's example, a desk splits its P&L into sources such as spread movements and the loss of value as time passes (time decay). Many desks also broke down daily P&L by sensitivities such as delta, gamma, theta, rho, and vega, in line with the risks they managed⁹.

Documents and data used

Signing off daily P&L involves market data, positions, calculation results, records of differences, and reports. The names of the documents and data in the table differ in practice between institutions and systems.

The contents of the table are based on the examination manual and on the items UK rules require firms to include in their valuation policies (such as the sources of market information and the timing of closing prices)²³¹⁰⁷.

Units involved and their roles

Signing off values and P&L involves separate units, some that trade and some that check the trading. The roles of the units as a whole, and the reasons for separating them, are covered in Front, Middle and Back Office Roles.

The division of roles in the table is based on the examination manual and the FSA's Final Notice^6231095. According to the February 1998 examination manual, valuation, identifying the sources of revenue, and reporting to management were usually the responsibility of a unit that does not trade, such as financial control. Some banks had begun placing operations and other control staff within the business line, reporting to the business head. Examiners checked that such staff were still sufficiently independent of the units that trade¹. As of April 2003, P&L explain at most large institutions was the job of risk management or the middle office⁹.

At UBS in 2011, where unauthorized trading led to losses of USD 2.3 billion, product control sat within the finance division, and its role was to understand and validate P&L and the positions behind it¹³⁵.

Separately from daily valuation, a unit that does not trade periodically re-checks values and valuation inputs. This is called independent price verification. UK rules require market prices and valuation inputs to be checked at least monthly by a person or unit independent of the people or units that benefit from the trading book¹⁴. In the examination manual (February 1998), this revaluation was usually monthly. There were examples of revaluing a sample of simple, high-volume products, and revaluing all complex trades or selecting the largest ones⁶.

Catching P&L suspensions and adjustments

Suspending or adjusting the recognition of P&L, and correcting the books after the fact, all change the P&L figure that is reported. Two safeguards can be drawn from the FSA's Final Notice on UBS and the examination manual. One is to show suspensions and adjustments separately in the daily report and challenge the reasons given for them. The other is to document clearly any correction to the books that comes from a changed valuation estimate and report it to senior management.

UBS in 2011 is an example in which requests for suspensions and adjustments were not properly checked. Product control could suspend or adjust the recognition of P&L to reflect booking errors, timing differences in trade capture, and delays in pricing. Suspensions were usually requested by a trader, and until August 18, 2011 they were not shown separately in the daily P&L report. In August of that year, the rogue trader requested suspensions totaling USD 1.6 billion, but a junior product controller did not adequately challenge them or escalate them to more senior staff¹⁵.

The FSA's Final Notice also points out that product control did not investigate why the desk's profits had grown well beyond what its end-of-day risk positions could explain. It says that the combination of unexplained profits and large suspensions should have signaled the need for closer scrutiny¹⁶. Unexplained P&L calls for investigation when it is a profit, not only when it is a loss.

The February 1998 examination manual called for any later correction to the general ledger resulting from a change in valuation estimates to be clearly documented and reported to senior management³. The same manual called for the cause to be investigated, and for a decision on whether financial reports need to be corrected, when independent price verification produces results that differ significantly from the book values⁶.

Related regulations

PRA rules (Article 105) require the following of the valuation process. Firms document their valuation policies and procedures, covering the responsibilities of the units involved, the sources of market information, the timing of closing prices, the procedures for adjusting valuations, the month-end and ad hoc verification procedures, and other items. The reporting line of the unit responsible for valuation is kept independent of the front office⁷. Firms also need procedures for considering valuation adjustments¹⁷.

In Japan, the capital adequacy notice for banks defines actual P&L as "the actual profit and loss calculated in the daily profit and loss calculation process" (our translation)¹⁸. Banks that measure their market risk capital requirement with internal models check their models by comparing daily VaR with this actual P&L and with hypothetical P&L, which revalues the previous day's positions with the current day's market data¹⁹.

The Financial Services Agency's "Comprehensive Guidelines for Supervision of Major Banks, etc." list a point of focus for marketable credit products, including credit default swap (CDS) trades. The point is whether risk management or another unit independently verifies prices calculated by the front office when those prices are used as values for risk management. The "Comprehensive Guidelines for Supervision of Financial Instruments Business Operators, etc." contain the same point of focus²⁰.

Notes

1. Board of Governors of the Federal Reserve System, "Trading and Capital-Markets Activities Manual," Section 2100.1 "Financial Performance" (February 1998), page 1 (introduction and "VALUATION"). ↩ ↩² ↩³ ↩⁴

2. The same manual, Section 2060.1 "Operations and Systems Risk (Back-Office Operations)" (February 1998), page 5, "REVALUATION" and "Reconciliations." ↩ ↩² ↩³

3. The same manual, Section 2060.1 (February 1998), page 6 (continuation of "REVALUATION"). ↩ ↩² ↩³ ↩⁴ ↩⁵

4. Prudential Regulation Authority, "PRA Rulebook," Trading Book (CRR) Part, Article 105 "Requirements for Prudent Valuation" (version of February 8, 2025), paragraph 3. ↩

5. Financial Services Authority, "Final Notice" (UBS AG, November 25, 2012), paragraph 41. ↩ ↩² ↩³

6. Board of Governors of the Federal Reserve System, "Trading and Capital-Markets Activities Manual," Section 2100.1 (February 1998), page 2. ↩ ↩² ↩³ ↩⁴ ↩⁵

7. Prudential Regulation Authority, "PRA Rulebook," Trading Book (CRR) Part, Article 105 (version of February 8, 2025), paragraph 2(a) and (b). ↩ ↩² ↩³

8. Board of Governors of the Federal Reserve System, "Trading and Capital-Markets Activities Manual," Section 2060.2 "Examination Objectives" (February 1998), page 1, item 8. ↩

9. The same manual, Section 2100.1 (April 2003), page 9, continuation of "INCOME ATTRIBUTION," "Explained Profits and Losses," and "Unexplained Profits and Losses." ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸

10. The same manual, Section 2100.1 (April 2003), page 9, "Reports to Management." ↩ ↩² ↩³

11. The same manual, Section 2100.1 (April 2003), pages 8–9, "INCOME ATTRIBUTION." ↩

12. Prudential Regulation Authority, "PRA Rulebook," Trading Book (CRR) Part, Article 105 (version of February 8, 2025), paragraph 7(d) and (e), and the last subparagraph of the same paragraph. ↩

13. Financial Services Authority, "Final Notice" (UBS AG, November 25, 2012), paragraph 23. ↩

14. Prudential Regulation Authority, "PRA Rulebook," Trading Book (CRR) Part, Article 105 (version of February 8, 2025), paragraph 8. ↩

15. Financial Services Authority, "Final Notice" (UBS AG, November 25, 2012), paragraph 42. ↩

16. The same Final Notice, paragraph 61, item vi. ↩

17. Prudential Regulation Authority, "PRA Rulebook," Trading Book (CRR) Part, Article 105 (version of February 8, 2025), paragraphs 9 and 10. ↩

18. Financial Services Agency, "銀行法第十四条の二の規定に基づき、銀行がその保有する資産等に照らし自己資本の充実の状況が適当であるかどうかを判断するための基準" (Standards for determining whether a bank's capital adequacy is appropriate in light of the assets it holds, under Article 14-2 of the Banking Act, our translation; FSA Notice No. 19 of 2006, consolidated version updated on August 24, 2026), Article 1, item 92 (hypothetical P&L) and item 95 (actual P&L) (pages 24–25) (in Japanese). ↩

19. Financial Services Agency, "銀行法第十四条の二の規定に基づき、銀行がその保有する資産等に照らし自己資本の充実の状況が適当であるかどうかを判断するための基準" (FSA Notice No. 19 of 2006), Article 275-2, paragraph 1 (page 460) (in Japanese). ↩

20. Financial Services Agency, "主要行等向けの総合的な監督指針" (Comprehensive Guidelines for Supervision of Major Banks, etc.) (October 2026), III-2-3-3-2(3)①ロ (page 126), and Financial Services Agency, "金融商品取引業者等向けの総合的な監督指針" (Comprehensive Guidelines for Supervision of Financial Instruments Business Operators, etc.) (October 2026), IV-2-3(3)⑦イb (page 121) (in Japanese). ↩