Technical provisions under Solvency II: best estimate, risk margin, and how they land in S.12.01 and S.17.01

Technical provisions are the largest liability on the typical insurer’s Solvency II balance sheet. Directive 2009/138/EC defines them as a best estimate plus a risk margin. This article explains what goes into each part, how the best estimate is discounted with EIOPA’s risk-free curve, how the risk margin is calculated today and how it changes on 30 January 2027, and where the figures go in template S.12.01 for life business and S.17.01 for non-life. A worked example takes a non-life claims reserve of 10,000 from its undiscounted value through discounting, reinsurance recoverables and a simplified risk margin to the rows of S.17.01. It is the same arithmetic that TP Tool runs on your own claim and premium transactions, only small enough to check by hand. The reader we have in mind is the CFO or reporting lead who signs the number off.

Technical provisions are a best estimate plus a risk margin

Articles 76 to 86 of Directive 2009/138/EC set the rules. Article 76 gives the principle: technical provisions are the amount an insurer would have to pay to transfer its obligations to another insurer immediately. Article 77 turns that into a formula: a best estimate plus a risk margin, valued separately unless the cash flows can be replicated reliably with traded financial instruments, in which case the provision is “calculated as a whole” at their market value.

Articles 78 to 83 add expenses, inflation and discretionary benefits, the valuation of options and guarantees, segmentation, reinsurance recoverables, data quality and the comparison of best estimates against experience. Most of the practical rules sit in Delegated Regulation (EU) 2015/35, Articles 17 to 61.

For valuations in which the two components are calculated separately, the relationship is:

The best estimate

Article 77(2) defines the best estimate as the probability-weighted average of future cash flows, taking account of the time value of money using the relevant risk-free interest rate term structure.

Let $\mathrm{CF}_t$ be the net cash outflow in year $t$, and $r_t$ the applicable spot rate for that maturity. In annual notation, the best estimate is:

Probability-weighted means a mean and not a prudent figure. The best estimate contains no deliberate margin for prudence. The separate risk margin is not an adjustable safety loading. It is calculated using the prescribed cost-of-capital method described below. The EIOPA guidelines on valuation of technical provisions address assumption setting and data quality, but do not prescribe a separate ENID allowance. Historical claims data alone may miss events not represented in the triangle, so their expected impact should be reflected in best-estimate assumptions where relevant. “Events not in data” (ENID) is terminology used in UK actuarial practice.

Future cash flows means everything needed to settle the obligations: under Article 28 of the Delegated Regulation, benefit payments, expenses, premiums still to be received, payments to intermediaries, salvage and subrogation, and taxes charged to policyholders. Article 31 covers administrative, investment management, claims management and acquisition expenses, and Article 78 of the Directive adds inflation.

For non-life business Article 36 of the Delegated Regulation splits the best estimate in two. The claims provision covers claim events that have already occurred, reported or not, so it holds the case reserves and the IBNR described in our article on what IBNR is. The premium provision covers claim events still to come on contracts the insurer is already bound to, within the contract boundary, and counts the premiums still due as an inflow. Note that it can be negative on profitable business.

The best estimate is gross. Reinsurance recoverables are calculated separately under Article 81 of the Directive and Articles 41 and 42 of the Delegated Regulation: the same cash flows, allowing for the lag between the direct payment and the recovery, less an adjustment for the expected loss if the reinsurer defaults.

Which discount curve applies

Under Article 77e of the Directive, EIOPA publishes the relevant risk-free interest rate term structure for each currency at least quarterly, and in practice every month. Article 43 of the Delegated Regulation sets the criteria: rates the insurer can earn risk-free in practice, taken from instruments traded in deep, liquid and transparent markets, and extrapolated beyond the last liquid maturity towards an ultimate forward rate.

Each currency has its own curve. The present value of a cash flow due in year $t$ is:

Here $r_t$ is the spot rate for that currency and maturity. The volatility adjustment and the matching adjustment, where approved, sit on top of the basic curve. The transitional deduction on technical provisions is reported separately. A transitional adjustment to the risk-free term structure, if applied, is reflected in the reported valuation figures. Directive (EU) 2025/2 changes the extrapolation method from 30 January 2027, as our article on Directive (EU) 2025/2 describes.

The risk margin

Article 77(3) says the risk margin brings the technical provisions up to what another insurer would require to take over the obligations, and Article 77(5) says how: the cost of providing eligible own funds equal to the Solvency Capital Requirement needed to support them over their lifetime. Article 37 of the Delegated Regulation writes this cost-of-capital method out:

where CoC is the cost-of-capital rate, $\mathrm{SCR}(t)$ is the capital requirement of a reference undertaking after $t$ years, and $r(t+1)$ is the basic risk-free rate for maturity $t+1$. Article 38 defines the reference undertaking: it takes over the whole portfolio with no obligations of its own, holds assets that minimise market risk, and its SCR covers underwriting risk, counterparty credit risk, operational risk and any material market risk other than interest rate risk. Article 39 sets the cost-of-capital rate at 6%. The risk margin is calculated for the whole portfolio and allocated to lines of business under Article 37(3).

Few undertakings project the full SCR year by year. Article 58 of the Delegated Regulation allows simplifications, and Guideline 62 of the EIOPA Guidelines on the valuation of technical provisions ranks them: approximate the individual risk modules (method 1), scale the whole SCR by the ratio of the future best estimate to today’s (method 2), use the modified duration of the liabilities (method 3), or take a percentage of the best estimate (method 4). The same EIOPA guidelines also cover how to assess data quality, group risks, set assumptions and decide which contracts to include. The worked example later in this article uses an undiscounted cash-flow runoff proxy to illustrate future SCRs, rather than a direct application of Method 2.

What changes on 30 January 2027

Two amendments change the risk margin from 30 January 2027, the date from which Member States apply Directive (EU) 2025/2. The directive rewrites Article 77(5) so that the SCR in the formula is time-adjusted by “an exponential and time-dependent element”, and a new Article 77(6) sets the cost-of-capital rate at 4.75% as of 30 January 2027, with no review before 31 January 2032 and any later change kept between 4 and 5%.

Delegated Regulation (EU) 2026/269, published in the Official Journal on 18 February 2026 and applying from the same 30 January 2027, replaces the Article 37 formula with:

and replaces Article 39 so that CoC equals 4.75%. The factor $0.96^t$ cuts each future year’s capital requirement by 4% a year, compounding, down to a floor of 50%. Recital 9 explains why: the lower rate alone cuts the risk margin by roughly 21%, and the factor corrects for risks such as lapse and mortality that decline over time but were counted in full under the old formula.

A worked example

One non-life line of business, figures in EUR thousand, valuation date 31 December. The reserving actuary’s projected claim payments, including IBNR but before claims-handling expenses, total 10,000 and are expected to be paid over five years. Claims handling expenses are 3% of payments. The discount rates are illustrative spot rates, not the EIOPA curve of any particular month.

The gross best estimate of the claims provision is:

That is 10,300 undiscounted less 512 of discounting, about 5%.

The premium provision on the unexpired contracts is projected the same way: 900 of claims and expenses in year 1 and 400 in year 2, less 200 of premiums still due in year 1, so net cash flows of 700 and 400:

Reinsurance is a 20% quota share. Before the counterparty default adjustment, the recoverables are 1,958 on the claims provision and 214 on the premium provision. After the 0.5% adjustment:

The total recoverable is 2,161.

For this illustrative risk-margin calculation, projected SCR is scaled by the share of undiscounted projected cash outflows (claims and expenses, less premiums) remaining after year $t$. This is a simplified runoff proxy, not the Guideline 62 Method 2 calculation, which uses the ratio of the future-year best estimate to the best estimate at the valuation date:

where $\mathrm{UCF}(t)$ is the remaining undiscounted projected cash outflows, net of premiums but gross of reinsurance, after year $t$. Here $\mathrm{UCF}(0)=11{,}400$. The constant quota-share and default adjustment in this example do not change the runoff percentages. $\mathrm{SCR}(0)$ for the reference undertaking is taken as 1,750, about 20% of the net best estimate, an assumption of the example rather than a rule. Each year’s SCR is discounted at the rate for maturity $t+1$, as Article 37 requires.

The risk margin calculation gives:

That is a fall of 23.7%. The rate change alone would have given 171 (a fall of 20.8%). The exponential factor takes off a further 6, and more on a longer tail. The example treats the line as the whole portfolio and a real undertaking calculates the risk margin once and allocates it.

The technical provisions of the line of business are:

Where the figures land in S.17.01

Template S.17.01, Non-life Technical Provisions, has one column per line of business (C0020 to C0130 for direct and accepted proportional business, C0140 to C0170 for accepted non-proportional reinsurance) and a total in C0180. With the example figures in the column for the line of business:

Rows R0070 to R0090 and R0170 to R0190 split the gross figures between direct business, accepted proportional and accepted non-proportional reinsurance. R0100 to R0130 and R0200 to R0230 show the recoverables before the default adjustment and by counterparty type. R0290 to R0310 hold the transitional deduction on technical provisions where one is approved. The net best estimate of claims provisions in R0250 feeds the reserve risk volume measure of the SCR standard formula, so an error in the technical provisions can also affect the capital requirement.

Where the figures land in S.12.01

Template S.12.01, Life and Health SLT Technical Provisions, applies the same logic to life business. The columns are the life lines of business, with the index-linked and unit-linked, other life and health lines each split between contracts with and without options and guarantees. The totals sit in C0150 for life other than health and in C0210 for health similar to life. Life business has no premium and claims split, so the rows are shorter: R0010 for technical provisions calculated as a whole, R0030 for the gross best estimate, R0080 for recoverables after the counterparty default adjustment, R0090 for the net best estimate, R0100 for the risk margin, R0110 to R0130 for the transitional deduction, R0200 for total technical provisions and R0210 for technical provisions minus recoverables.

What S.12.01 adds is a view of the cash flows themselves. Rows R0230 to R0280 break the gross best estimate into future benefits, future expenses, future premiums and other in-flows, so a supervisor can see where a low best estimate comes from, and R0370 reports the expected profits included in future premiums. Both templates are in the full list of Solvency II QRTs.

Where this lands in the software

TP Tool covers the non-life side of this article. Claim and premium transactions are loaded as they are and checked for completeness, and the Risk Group Designer groups them into the homogeneous risk groups Article 80 asks for. The Statistical Engine builds the triangles, runs chain-ladder, Bornhuetter-Ferguson and fixed loss ratio estimates side by side and projects the claims cash flows per risk group, so the undiscounted provision, the payment pattern and the discounted best estimate, with inflation and claims handling expenses, come out of one run. Reserve uncertainty is shown next to the central estimate. The Reporting Processor then populates S.17.01 together with S.05.01, S.18.01, S.19.01, S.20.01, S.21.01, S.28.01, S.29.02 and S.29.03, with ECB currency conversion at the reference date, and the audit trail runs from the transaction to the reported cell.