Solvency II Counterparty Default Adjustment Explained

Solvency II Counterparty Default Adjustment: How Reinsurer Credit Quality Reduces Your Recoverables

Last reviewed: November 2026

The Solvency II counterparty default adjustment is the deduction an insurer makes from its reinsurance recoverables to reflect expected losses if a reinsurer defaults or disputes payment. The weaker the reinsurer and the longer the recoverables take to collect, the bigger the deduction.

For most panels rated A or better, the adjustment is small. The problem is that a few weaker or unrated counterparties can drive almost all of it, and the same credit drivers then hit the SCR as well.

This guide is for CFOs, CROs, chief actuaries and heads of outwards reinsurance at Solvency II cedents. It explains the formula, shows how credit quality changes the number, and sets out what to check before your next security review.

Key Takeaways

• The counterparty default adjustment reduces best estimate recoverables for expected losses from reinsurer default, including disputes.
• Article 61 of Delegated Regulation 2015/35 offers a simplified formula: 0.5 × PD/(1−PD) × modified duration × recoverables.
• The 0.5 factor reflects the Article 42 rule that loss given default is not assessed below 50% without a reliable basis.
• Probability of default rises steeply below A, so a small share of weaker counterparties can dominate the total.
• Duration matters as much as rating: long-tail recoverables carry a proportionally larger deduction.
• The adjustment is separate from the SCR counterparty default risk charge, which is usually larger and also moves with ratings.

What Is the Solvency II Counterparty Default Adjustment?

The counterparty default adjustment is a negative adjustment to reinsurance recoverables, required by Article 81 of the Solvency II Directive. It ensures the balance sheet shows recoverables at their expected value after credit losses, not at their contractual amount.

Article 42 of Commission Delegated Regulation (EU) 2015/35 sets out how to calculate it. Four features matter most for reinsurance buyers.

1. Separate calculation. The adjustment is calculated separately from the rest of the recoverables, so it is visible in its own right.
2. Default includes dispute. Default covers insolvency and dispute, so a reinsurer that pays late or contests claims is in scope.
3. Lifetime view. The calculation considers possible default over the lifetime of the reinsurance contract, by counterparty and by line of business.
4. A loss floor. The average loss on default is not assessed below 50% of recoverables unless there is a reliable basis for another figure.

For non-life business, the adjustment is also calculated separately for premium provisions and claims provisions. Collateral is recognised, but most other risk-mitigation techniques are disregarded.

How Is the Counterparty Default Adjustment Calculated?

There are two routes: a full expected-loss calculation under Article 42, or the simplified formula in Article 61. Most cedents with conventional panels use the simplification, where proportionality allows.

What Does the Full Method Require?

The full method calculates the expected present value of the change in recoverable cash flows that would arise if the counterparty defaulted. It needs a term structure of default probabilities, a loss-given-default assumption and projected recoverable cash flows by counterparty.

This is the right method when recoverables are large, very long-dated or backed by complex collateral. It is also the method an internal model firm will usually align with its credit risk model.

What Is the Article 61 Simplification?

Article 61 allows the adjustment to be calculated per counterparty and homogeneous risk group as:

Adj_CD = −max(0.5 × PD / (1 − PD) × Dur_mod × BE_rec ; 0)

• PD is the probability that the counterparty defaults over the next 12 months.
• Dur_mod is the modified duration of the recoverables from that counterparty.
• BE_rec is the best estimate of recoverables from that counterparty for that risk group.

The term PD/(1−PD) multiplied by duration approximates cumulative default probability over the run-off. The 0.5 factor applies the 50% loss-given-default floor from Article 42.

Where Does the Probability of Default Come From?

Article 61 defines PD as a 12-month default probability but does not prescribe a source. Many firms use the standard formula table in Article 199 for consistency with the SCR.

That table maps credit quality steps to default probabilities as follows:

Article 199 also sets PDs for unrated Solvency II insurers by solvency ratio. A ratio above 196% maps to 0.01%, a ratio below 75% maps to 4.2%, and intermediate ratios are interpolated.

The broad rating equivalents above are indicative. The binding mapping for each rating agency's scale is in the ECAI mapping implementing standards, so use your agency's own mapping in the calculation.

How Much Does Reinsurer Rating Move the Adjustment?

The deduction rises steeply as ratings fall below A. The worked example below shows how a small share of weaker recoverables can dominate the total.

Worked Example: Adjustment Across a Five-Reinsurer Panel

The illustration is simplified and uses EUR. Recoverables are in EUR millions and the adjustment is in EUR thousands.

Assumptions: a liability portfolio with EUR 520 million of best estimate recoverables, modified duration of 4 years for all counterparties, and PDs taken from the Article 199 table.

Reinsurers D and E hold 70 million, or 13% of recoverables. They generate 2,969 thousand, or about 82% of the total adjustment.

Now move the 70 million held by D and E to an A-rated reinsurer.

Duration matters as well. The same EUR 100 million from the BBB reinsurer produces an adjustment of 120 thousand at a duration of 1 year, 481 thousand at 4 years and 962 thousand at 8 years.

The lesson for cedents: the adjustment is driven by the tail of the panel, not the average rating. A cheap line from a weak or unrated reinsurer on a long-tail class can cost more in own funds than it saves in premium.

The same counterparties also drive the SCR counterparty default risk charge, so the real capital cost is higher than this table alone suggests.

When Should You Use the Simplification or the Full Method?

Use the Article 61 simplification when recoverables are conventional and proportionate to the risk. Move to the full method when the simplification would misstate the expected loss.

Whichever method you choose, document why it is proportionate. Supervisors will ask how material the adjustment would be under the alternative.

How Does the Adjustment Differ From the SCR Counterparty Default Charge?

The adjustment covers expected loss within technical provisions, while the SCR counterparty default risk module covers unexpected loss at the 99.5% level. Both use credit quality, but they answer different questions.

A downgrade therefore hits the solvency ratio twice. Own funds fall through the adjustment, and the SCR rises through the counterparty default module.

For the wider risk of correlated reinsurer failure through shared owners and asset managers, see reinsurance counterparty contagion.

Which Mistakes Distort the Counterparty Default Adjustment?

Six mistakes cause most misstatements. Each is easy to fix in a calculation and hard to defend in a supervisory review.

How Should Cedents Manage Recoverables Credit Quality?

Manage the adjustment through panel design, collateral and data, not through the formula. The table below lists the data a valuation actuary needs from the reinsurance function.

Which Questions Should the Security Committee Ask?

• Which counterparties generate most of the adjustment, and what would replacing them cost in premium?
• Are long-tail lines placed with the strongest reinsurers on the panel?
• Which unrated counterparties are on the panel, and what is the documented basis for their PD?
• Is collateral sized to recoverables, and is it tested for enforceability each year?
• How long does it take to recalculate the adjustment after a rating action?

How Does It Interact With IFRS 17, Rating Agencies and ORSA?

The same credit risk appears in several frameworks, and the numbers should reconcile. Differences should be explainable, not accidental.

IFRS 17

IFRS 17 requires reinsurance contracts held to reflect the risk of non-performance by the reinsurer, including collateral and losses from disputes. The method differs from Solvency II, but the inputs are the same.

Rating Agencies

Rating agency capital models also charge for recoverables by counterparty credit quality. A panel decision that looks neutral under Solvency II can still move a rating agency capital ratio.

ORSA

The ORSA should stress recoverables for downgrades and defaults among the largest counterparties. We discuss how to bring that into the core model in the reinsurer data gap in ORSA.

What Is Changing in the Market?

The Solvency II review is being implemented. Directive (EU) 2025/2 amends the Solvency II Directive, with application from 30 January 2027, and the Commission has adopted amendments to the Delegated Regulation.

Before year-end 2027 reporting, check whether any parameter used in your counterparty default calculations has changed. Also check whether your supervisor's guidance on simplifications has been updated.

Market conditions matter too. When reinsurance pricing softens, cedents are often offered cheaper capacity from newer, smaller or lower-rated reinsurers.

That capacity can be useful, but it changes the credit profile of the panel. The worked example shows why security criteria should be priced into placement decisions, not applied as a pass-or-fail filter.

Checklist for CFOs and Heads of Reinsurance

Use this checklist before each valuation date and each renewal.

• Recoverables are held by counterparty and homogeneous risk group, reconciled to treaty shares
• Modified duration is calculated by counterparty, not averaged across the panel
• Ratings and credit quality steps are refreshed at each valuation date
• Unrated counterparties have a documented PD basis
• Disputed and aged balances are reflected in the expected loss
• Collateral is netted only where enforceability has been tested
• The choice of simplified or full method is documented as proportionate
• The adjustment reconciles to IFRS 17 non-performance and rating agency views

Centralised reinsurance treaty management keeps panel shares and settlement terms consistent. Bordereaux reconciliation then allocates claims to each reinsurer, which is the starting point for recoverables by counterparty.

Key Terms

Counterparty default adjustment: The deduction from reinsurance recoverables for expected losses from reinsurer default or dispute, required by Article 81 of the Solvency II Directive.

Best estimate recoverables (BE_rec): The probability-weighted present value of amounts expected to be recovered from a reinsurer, before the counterparty default adjustment.

Probability of default (PD): The likelihood that a counterparty defaults within the next 12 months.

Credit quality step (CQS): The Solvency II scale, from 0 to 6, that maps external ratings to standard formula parameters.

Loss given default (LGD): The share of an exposure lost if the counterparty defaults. Article 42 sets a 50% floor for the adjustment unless there is a reliable basis for another figure.

Modified duration: A measure of the sensitivity of the recoverables' value to interest rates, used in Article 61 as a proxy for the time exposed to default.

Homogeneous risk group: A grouping of policies with similar risk characteristics, used as the unit for calculating technical provisions.

SCR counterparty default risk module: The standard formula capital charge for unexpected losses from counterparty default.

Sources

• Commission Delegated Regulation (EU) 2015/35 (Solvency II)
• EIOPA Solvency II Single Rulebook: Article 42, counterparty default adjustment
• EIOPA Solvency II Single Rulebook: Article 61, simplification for the counterparty default adjustment
• EIOPA Solvency II Single Rulebook: Article 199, probability of default
• IFRS 17 Insurance Contracts, IFRS Foundation