Expanding our Reach: Beyond the Majors — Tail Markets & the ISK Launch

By Ioannis Kympritis, Head of Growth

The conventional approach to building payments infrastructure is to follow the volume, which has led to G10 and major emerging markets pairs being well served, well priced, and well understood. The structural gap has always sat further out the curve, in corridors where interbank flow is thinner, price discovery less continuous, and counterparty coverage fragmented. These markets in turn have lower volumes, higher complexity, and hence less drive to be enabled and innovated. Institutions with genuine exposure to these markets have historically had to accept that as a given, facing wider spreads, opaque pricing, and devastatingly slow settlement speeds.

The companies that need tail currency infrastructure have nowhere else to go, and that's exactly where good infrastructure creates disproportionate value.

What's changed in recent years is the underlying architecture. Stablecoins, on-chain settlement, and programmable liquidity have made it viable to serve these corridors in a way corresponding banking alone never could. The infrastructure gap persists — but it's now closable.

Hercle's expansion into such corridors is a direct response to that shift. By combining our liquidity infrastructure with targeted banking relationships, we are able to bring institutional-grade precision to corridors where that standard has rarely been available. Clients gain tight spreads, transparent pricing, and critically, the ability to transact with settlement finality in a matter of minutes.

ISK launch

Iceland is a developed, internationally connected economy with genuine cross-border flow, primarily in tourism, digital services, seafood exports, and commodities such as aluminum. The businesses operating there need reliable and reasonably priced settlement, but the options they face are limited, expensive and slow. FX liquidity in ISK has historically been thin, episodic, and concentrated among a small number of Scandinavian and domestic counterparties.

The gap is simple: the infrastructure to serve this market consistently has never existed.

Today, Hercle is adding the Icelandic Króna (ISK) to its corridor coverage, priced against over 30+ fiat currencies and stablecoins, and built for the settlement volumes Iceland's economy actually moves.

The broader argument for tail corridors

Every currency that gets categorised as niche represents a community of businesses with real settlement needs. When infrastructure providers ignore these currencies, those businesses get pushed into fragmented workarounds: manual FX desks, correspondent banking chains with too many correspondents, settlement windows measured in days, and high fees that compound at every step.

The reason Hercle can move into these corridors where larger, more established infrastructure providers typically won't is structural. Legacy FX infrastructure was built around a fixed set of deeply liquid pairs and the correspondent banking relationships that support them, so extending it meaningfully is slow, expensive, and often commercially unjustifiable for a single corridor. Our rails combine RTPS where available with blockchain-based settlement — thus adding a new corridor becomes less of an infrastructure challenge and more of a liquidity, compliance, and a counterparty one. Those are hard, but are tractable — and exactly where we focus our effort when entering a new corridor.

The tail markets more broadly

ISK is just one. There is a whole cluster of sophisticated, well-regulated markets with active digital asset ecosystems and meaningful cross-border payment volumes.

Keep an eye out.

Check ISK and all our other supported corridors here: hercle.com/corridor-checker