UK K-COH calculator
Client orders handled is one of the more approachable K-factors: two coefficients, one rolling average, no trading book. The catch is the measurement window — six months, with the three most recent excluded — so the figure you owe next month was fixed by business you did last quarter.
MIFIDPRU 4.10 measurement · MIFIDPRU 4.10.1R coefficients · cash 0.1% · derivatives 0.01% · nothing stored
Same coefficients and the same unusual window — six months less the three most recent, leaving only three. MIFIDPRU 4.10 adds exclusions for orders arising from advice where a K-AUM requirement is already calculated on the portfolio. EU K-COH →
Calculate K-COH
Runs in your browser · nothing uploadedEnter the rolling average of total daily client orders handled for each category. Under MIFIDPRU 4.10 that average runs over each business day of the previous six months, excluding the three most recent months, and is calculated on the first business day of the month.
Client orders handled
MIFIDPRU 4.10 · sum of the absolute value of buys and sellsK-COH moves every month, on a window that closed three months ago. Pillar 1 Capital keeps the rolling averages current across every K-factor and shows which limb is binding — with free capital monitoring to start.
Create free account →Why the number lags your business
MIFIDPRU 4.10 deliberately measures the past rather than the present, and the shape of that window surprises people.
The observation period
COH is the rolling average of total daily client orders handled, measured over each business day of the previous six months.
The exclusion
The three most recent months drop out. So the average is built from months four to six before the calculation date — only three months of daily values, not the half-year just gone.
The calculation point
K-COH is calculated on the first business day of each month, so the requirement steps rather than drifts, and a busy quarter arrives in your capital requirement two quarters later.
The EU equivalent carries the same window; EBA Q&A 2022_6384 confirms that reading · Rules reviewed 21 August 2026 · MIFIDPRU 4.6, 4.10.1R and 4.10.19R
What this calculator does
It applies two coefficients. The measurement underneath them is left with you, deliberately.
It doesApply the MIFIDPRU 4.10.1R coefficients
- Applies 0.1% to cash trades and 0.01% to derivatives, and sums them.
- Converts a period total into a daily average where you do not already have one.
- Shows each component separately, so the effect of the cash and derivative split is visible.
- Flags where a small change in the split would materially move the result.
- States the MIFIDPRU 4.10 window and calculation point alongside the figure.
It does notMeasure COH
- Calculate the MIFIDPRU 4.10 rolling average, or apply the three-month exclusion.
- Determine which orders are executed in the name of the client versus received and transmitted.
- Include tied agent activity, which must be captured in the underlying figures.
- Calculate any other K-factor, or the K-factor requirement as a whole.
- Produce anything you can file. It is a calculator, not a return.
K-COH is one input, not the answer
Your own funds requirement is the highest of the permanent minimum requirement, the fixed overheads requirement and the sum of all your K-factors.
Nothing you type here leaves your browser
The calculation runs entirely in your own browser. No figure you enter is sent to REGREP, written to a log, saved to a database, or passed to any analytics tool.
About K-COH
What period does COH cover?
Under MIFIDPRU 4.10, COH is the rolling average of the value of the total daily client orders handled, measured throughout each business day over the previous six months, excluding the three most recent months. K-COH is then calculated on the first business day of each month.
Which coefficients apply?
MIFIDPRU 4.10.1R sets 0.1% for client orders handled in cash trades and 0.01% for derivatives. The ten-fold difference means the split between the two categories moves the result far more than a proportionate change in total volume.
How are orders valued?
By the sum of the absolute value of buys and sells, so purchases and sales do not net against each other. Derivatives are measured by notional value.
Do orders handled by tied agents count?
Yes. Amounts relating to investment services and activities carried out by your tied agents must be included, so those volumes cannot be used to reduce the K-factor.
Does a Class 3 firm calculate K-COH?
No. An SNI firm does not calculate a K-factor requirement at all under MIFIDPRU 4.3.2R, and takes the higher of the permanent minimum requirement and the fixed overheads requirement instead.
Do you store the figures I enter?
No. Everything is calculated in your browser and discarded when you close or reload the page.
Eight K-factors, eight rolling windows.
Create a free account and track them together, so the requirement is something you see coming.
No card required · free capital monitoring · nothing stored from this calculator