Ceding Commission Accrual: Fix the Month-End Treaty Gap

Ceding Commission Accruals That Don't Match the Treaty: Fixing the Month-End Gap

Last reviewed: November 2026

The quota share is running hotter than planned, yet the ledger still accrues commission at the provisional rate. Nobody has lied, but the month-end numbers no longer describe the contract.

Short answer: A ceding commission accrual matches the treaty when it uses the treaty's own commission terms, premium base and, for sliding scales, the current loss ratio. The month-end gap closes when those terms are held as structured data and recalculated every close, not re-keyed once a year.

Key Takeaways

• The provisional rate is not the accrual. On a sliding scale, the accrual should follow the latest loss ratio.
• Check the premium base. Commission applied to the wrong premium definition is wrong at any rate.
• Amendments must reach finance. A mid-term change in commission terms is a common source of drift.
• Keep commission and brokerage apart. They have different payees, terms and adjustment rules.

What Is a Ceding Commission Accrual?

A ceding commission accrual is the reinsurer's estimate, at a reporting date, of commission owed to the cedent on proportional business. It covers commission not yet settled or not yet finally adjusted.

The Reinsurance Association of America glossary defines ceding commission as a deduction from reinsurance premium for the cedent's acquisition and overhead costs. On quota share and surplus treaties, it is often a major cash flow.

Why Do Accruals Drift From the Treaty?

Accruals drift because finance often books what was settled, not what the treaty now implies. Accounts from cedents also arrive in arrears, so month-end relies on estimates.

Why is the provisional rate the default?

The provisional rate is the default because it appears on every account the cedent sends. It is easy to book and easy to reconcile.

On a sliding scale, though, it reflects the loss ratio expected at inception. Once actual experience differs, the provisional rate overstates or understates what will be due.

What other causes create the gap?

Other causes are manual rates, amendments and definitions. Each one is small, but together they make the accrual unreliable.

• Commission rates re-keyed into the ledger by hand
• A mid-term endorsement that changes the scale but never reaches finance
• Commission applied to gross premium where the treaty specifies premium net of cancellations
• Premium accrued from an estimate while commission is accrued from booked accounts
• Brokerage and ceding commission combined into one line

Which Commission Types Need Different Accrual Rules?

Each commission type needs its own accrual rule, because each depends on different inputs. Treating them all as a flat percentage is the root of most gaps.

The RAA glossary describes a sliding scale as commission that "varies inversely with the loss ratio", subject to a maximum and minimum. It also describes provisional amounts as tentative and subject to later adjustment.

How Should a Sliding Scale Commission Be Accrued?

A sliding scale commission should be accrued at the rate implied by the current best estimate of the ultimate loss ratio. The provisional rate is only the starting point.

Illustrative sliding scale:

• Provisional commission: 30% at a 65% loss ratio
• Commission rises 0.5 points for each 1 point the loss ratio falls, to a maximum of 35% at 55%
• Commission falls 0.5 points for each 1 point the loss ratio rises, to a minimum of 25% at 75%

Illustrative month-end position: the reinsurer's share of ceded premium to date is 40,000,000. Provisional commission settled is 12,000,000, at 30%.

If the ledger stays at 12,000,000 while the projection sits at 70%, accrued commission is overstated by 1,000,000. The cash adjustment may come years later, but the accrual should reflect it now.

How Do You Fix the Month-End Gap?

You fix the month-end gap by running the same commission calculation every close from structured treaty terms. The process below keeps finance and the treaty aligned.

1. Hold the terms as data. Record commission type, rates, scale bands, minimum, maximum and premium base for each treaty.
2. Apply amendments with dates. Version every change, so each period uses the terms in force.
3. Refresh the loss ratio. Take the latest projected ultimate loss ratio for sliding scale treaties from actuarial each quarter, or more often.
4. Calculate the implied commission. Apply the scale to the projected loss ratio and the defined premium base.
5. Compare with settled amounts. Book the difference as an amount due to or from the cedent.
6. Review material movements. Have a second person approve adjustments above an agreed threshold.

Step three is the one that crosses teams. Agree who supplies the loss ratio, how often and at what level of detail.

What About Profit Commission Accruals?

Profit commission accruals follow the same principle but use more inputs. The accrual should reflect the projected treaty result, not the cash paid so far.

A typical profit commission takes an agreed share of premium less claims, ceding commission, a management expense allowance and any deficit carried forward. Each of those items must match the treaty definition.

The common error is accruing profit commission on early, favourable claims data. If losses develop later, or a prior-year deficit was missed, the accrual reverses.

How Does IFRS 17 Change Ceding Commission Accounting?

IFRS 17 changes where ceding commission sits in the income statement. Commissions not contingent on claims are treated as a reduction of premium, not as an acquisition expense.

An IFRS 17 Transition Resource Group staff paper from September 2018 analysed this for reinsurers. In a flat commission example, the staff view was that revenue should be the premium net of commission.

The same paper analysed a sliding scale. Staff treated the commission payable with no claims as a premium reduction, and the amounts that vary with claims as part of claims.

That makes the split between premium and claims depend on the commission terms. Accurate, structured commission data matters for presentation as well as for cash.

This summary is not accounting advice. Confirm the treatment of each commission structure with your auditors.

Who Owns the Commission Accrual?

The commission accrual is owned by reinsurance finance, but it depends on three other teams. Each must supply one input on time.

• Treaty administration: Current commission terms and amendments.
• Actuarial: Projected loss ratios for sliding scale and profit commission treaties.
• Underwriting: Confirmation of the intended terms when wording is unclear.
• Finance: The calculation, booking and reconciliation to settled amounts.

Where Does Automation Help?

Automation helps by calculating commission from configured treaty terms, rather than from rates typed into a spreadsheet. Finance teams still validate the inputs and approve the result.

Reinsurance treaty management software supports commission structure and commission formula configuration, alongside treaty calculation rules and premium calculation. Amendments are versioned, and calculation history and an audit trail are kept.

That structured treaty data supports a repeatable commission accrual each close. Teams still validate the configuration and review the output.

Much of the gap starts when terms are typed twice. Our article on duplicate data entry between underwriting and accounting explains why.

Sliding scale and profit commissions are also common billing errors. See our guide to billing the treaty correctly.

How Do You Measure Accrual Quality?

You measure accrual quality by tracking how far accruals move when the final figures arrive. Large, late adjustments mean the month-end view was wrong.

What Should CFOs Do Before the Next Close?

CFOs should identify where commission accruals rely on provisional rates or re-keyed terms. Start with the largest sliding scale treaties.

• List every treaty with a sliding scale or profit commission.
• Recalculate their commission using the latest projected loss ratio.
• Separate brokerage from ceding commission in the ledger.
• Agree a quarterly loss ratio handover between actuarial and finance.

Key Terms

• Ceding commission: An amount the reinsurer allows the cedent for acquisition and other costs.
• Sliding scale commission: A commission that moves inversely with the loss ratio, between a minimum and maximum.
• Provisional commission: The commission rate paid before the final loss ratio is known.
• Profit commission: A share of treaty profit returned to the cedent under agreed terms.
• Loss carried forward: A prior-year deficit deducted before profit commission is due.
• Brokerage: The fee paid to the broker for placing the reinsurance.

Sources

• IFRS Foundation: TRG for IFRS 17, Agenda Paper 3: Commissions and reinstatement premiums in reinsurance contracts issued (September 2018)
• Reinsurance Association of America: Glossary of Reinsurance Terms
• Insurnest: Reinsurance Treaty Management