Treasury Operations · control & efficiency analyser

Four-Eyes Ledger

Enter daily volumes and the minutes each maker, verifier, authoriser and releaser spends per transaction, plus the EOD checklist. The ledger returns a control-adjusted efficiency score, the control-to-processing ratio, the cost of each control layer per catch, and ranked recommendations.

Transaction types

Type

Vol / day

Makermin

Verifiermin

Verifierreject %

Authorisermin

Authoriserreject %

Releasermin

Releaserreject %

Rework% of vol

Reworkmin each

Set a step to 0 minutes if it doesn't exist for that type (for example maker = 0 where the Bloomberg–FLEXCUBE integration creates the deal). Reject % = share of items the layer sends back.

Team and end-of-day

Operations FTE

Hours / person / day

Working days / year

EOD questions

EOD minutes / day

% answerable by system

People doing EOD

Drop an Excel file here or

Sheets: Types (one row per transaction type), Settings (key / value), and optionally Log (one row per transaction; the app averages it into Types).

Expected layout

Column names are matched case-insensitively; order doesn't matter. Percentages can be entered as 2 or 0.02.

Sheet	Columns
`Types`	Type, Volume, Maker_min, Verifier_min, Verifier_reject_pct, Authoriser_min, Authoriser_reject_pct, Releaser_min, Releaser_reject_pct, Rework_pct, Rework_min
`Settings`	Key, Value — keys: FTE, Hours_per_day, Working_days, EOD_questions, EOD_minutes, EOD_system_pct, EOD_people
`Log` (optional)	Type, Maker_min, Verifier_min, Authoriser_min, Releaser_min, Rejected_by (blank / Verifier / Authoriser / Releaser), Rework_min. Volume per type = rows ÷ Settings.Log_days (default 1).

Minutes per day by role

Where you sit on the control curve

Control layer economics

Hours per catch = layer hours per year ÷ items it rejects per year

Recommendations

How the numbers are calculated

Total time = Σ volume × (maker + verifier + authoriser + releaser minutes) + Σ volume × rework % × rework minutes + EOD minutes × people.

Required time = Σ volume × (maker + the first control layer present) + the part of EOD the system cannot answer. The first control layer is the four-eyes minimum and is never treated as waste.

Efficiency = required ÷ total. 100% means every minute is either doing the work or the one independent check on it. What sits between your score and 100% is additional control layers, rework, and manual EOD checks the system could answer.

Control ratio = all control minutes ÷ maker minutes, shown as x : 1. Where deals are system-created (maker = 0) the ratio is shown per human minute of input across the whole book.

Layer verdicts: a layer that catches fewer than one item a month, and is not the first check, is a redundant candidate; a layer rejecting under 1% is review — tier by risk; otherwise it is earning its place. These follow the inverted-U finding (JIAR 2021) that efficiency rises with control up to a point and falls beyond it; the point is where a layer's cost exceeds the loss it prevents.

Savings are hours per year using your working-days setting. They assume a merged or tiered layer keeps 30% of its time for high-risk items, a sequencing fix removes 80% of rework, and automating a system-answerable EOD question removes its full share of the checklist.