The ACORD 131, formally the Umbrella/Excess Section, is the supplemental ACORD form used to apply for umbrella or excess liability coverage sitting above an account's primary policies. It attaches to the ACORD 125 common application and answers the two questions an excess underwriter cares about most: what primary coverage sits underneath this, and how much loss potential rides above it. The form's defining feature is the schedule of underlying insurance, the list of primary policies the umbrella will attach over.

Excess and umbrella underwriting is, at its core, the underwriting of other people's underwriting. The excess carrier rarely sees the ground-level exposure directly; it prices off the adequacy of the layers below. That makes the ACORD 131's underlying schedule the most scrutinized part of the form, because a gap or a mismatch there is a gap in the tower.

TL;DR

• The ACORD 131 is the Umbrella/Excess Section, the supplement used to apply for liability coverage above primary policies.
• Its core content is the schedule of underlying insurance: each primary policy (general liability, auto, employers' liability, and others) with carrier, limits, and dates.
• It also captures whether coverage is umbrella or excess, the requested limits, and the self-insured retention (SIR).
• Excess underwriters price off the layers beneath them, so an incomplete or mismatched underlying schedule is a direct underwriting risk.
• Reconciling the ACORD 131 against the underlying ACORD sections is exactly the cross-document check that automated, source-linked extraction handles at intake.

What the ACORD 131 captures

Coverage type and structure. Whether the applicant is requesting a true umbrella (broader, can drop down over gaps) or a following-form excess policy, and the coverage form basis. The distinction changes how the layer responds to a loss.

Requested limits and retention. The each-occurrence and aggregate limits of the umbrella or excess layer, and the self-insured retention that applies to exposures not covered by an underlying policy. The SIR is where the applicant's own risk appetite shows.

Schedule of underlying insurance. The centerpiece. Every underlying policy is listed with its type (commercial general liability, business auto, employers' liability under workers' comp, and any others), the carrier, the policy number, the applicable limits, and the effective and expiration dates. The excess underwriter reads this to confirm the required underlying limits are actually in place and concurrent.

Exposure detail. Additional exposures that raise severity potential, such as owned or hired autos, watercraft or aircraft, foreign operations, and prior umbrella loss history.

Why the ACORD 131 matters at intake

The ACORD 131 is a reconciliation document by nature, and reconciliation is where manual intake breaks down. The underlying schedule on the 131 has to agree with the actual primary sections in the submission: the general liability limits on the ACORD 126, the employers' liability limits tied to the ACORD 130, the auto limits on the relevant section. When those numbers are keyed separately by hand, small disagreements slip through, and a small disagreement in an excess tower is not small. It is an attachment-point error.

This is precisely the kind of cross-document check that eats an underwriter's submission clearance time. Confirming that the schedule of underlying insurance matches the underlying forms, that limits meet the carrier's minimums, and that dates are concurrent is careful, repetitive work, and it is work that has to happen before pricing. The data is on the forms; the friction is in reconciling them, which is the recurring story across the ACORD forms family.

How Pibit.ai reads the ACORD 131

Pibit.ai's CURE™ (Centralized Underwriting Risk Environment) platform reads the ACORD 131's underlying schedule as structured, linkable data rather than a table to retype. DocumentCURE™ extracts the coverage type, requested limits, SIR, and every row of the schedule of underlying insurance with template-agnostic extraction. Because it reads the whole submission, it lines the 131's underlying entries up against the actual ACORD 126, 130, and auto sections in the file, surfacing a limit or date that does not match instead of letting it pass.

Every field carries field-level provenance, a link back to its exact location on the form, so an excess underwriter can trust the reconciled tower rather than rebuild it. Fed into submission intake at 100% data accuracy, the ACORD 131 stops being the form that slows an excess quote and becomes the part of the file that is already checked. More on the underwriting intelligence these forms hold in what ACORD forms reveal to underwriters.

Sources

• ACORD (Association for Cooperative Operations Research and Development), insurance data standards and standardized forms, 2026. (ACORD maintains the standardized commercial lines forms, including the ACORD 131 Umbrella/Excess Section.)
• Pibit.ai product documentation, 2026. (Internal, not linked: DocumentCURE™ template-agnostic extraction and cross-document reconciliation; 100% field-level data accuracy with source-linked provenance.)