Every currency added to a real-time settlement system creates a liability somewhere. A bank that agrees to settle Angolan kwanza directly must hold kwanza balances, fund nostro accounts in Luanda, and accept exposure to a currency that has, over the past decade, been considerably more volatile than the South African rand it now sits alongside in SADC-RTGS. That is the tension underneath this week's announcement that the kwanza became the system's second settlement currency: the decision extends bankability to Angolan trade, but it also asks someone — a commercial bank, a central bank, or a corporate treasury — to carry currency and liquidity risk that did not previously sit on a SADC-RTGS balance sheet.

The public record of the decision, confirmed jointly by Lesetja Kganyago, Governor of the South African Reserve Bank and chair of the SADC Committee of Central Bank Governors, and Manuel Tiago Dias, Governor of Banco Nacional de Angola, describes what changed at the level of the payment system. It says considerably less about who is funding the plumbing behind it. That gap is the story for anyone assessing whether this is a capital-markets opportunity or simply a cost saved for existing participants.

Whose balance sheet absorbs the risk

Direct settlement in kwanza means participating banks need working kwanza liquidity rather than relying on rand as an intermediary store of value for Angola-linked transactions. In practice, that liquidity has to come from somewhere: correspondent banking lines with Angolan institutions, kwanza-denominated credit facilities, or central bank swap arrangements. None of the currently available reporting specifies which of these mechanisms underpins the new settlement corridor. [TK]: the funding structure — correspondent lines, swap facility, or central bank-backed liquidity support — has not been confirmed by SADC's announcement and should be treated as an open question rather than assumed detail.

What is quantifiable is the scale of exposure being contemplated. Angola's trade and interbank transactions with the rest of SADC ran to roughly US$3.77 billion in 2025 across nine currencies, with South Africa accounting for close to 79 percent of that value. A kwanza settlement corridor built to capture even a modest share of the remaining transaction flow represents real balance-sheet commitment for whichever institutions choose to participate actively, rather than a passive technical upgrade.

Bankability for Angolan counterparties

For Angolan exporters and their regional buyers, direct kwanza settlement changes the practical calculus of trade finance. Previously, a transaction requiring kwanza-to-rand-to-third-currency conversion carried both explicit conversion costs and settlement-timing risk — funds in transit for longer, exposed to exchange-rate movement at each conversion point. A direct settlement rail shortens that exposure window, which is precisely the kind of change that makes a trade-finance line easier for a bank to price and approve.

That is a genuine bankability improvement, but it is bounded. It applies to transactions that clear through SADC-RTGS's new kwanza rail, not to Angola's broader external financing position, and it says nothing about Angola's own domestic foreign-exchange policy or reserve management, which remain separate questions for Banco Nacional de Angola rather than settlement infrastructure. Financial institutions assessing this development should be careful not to conflate a payment-rail upgrade with a change in underlying sovereign or currency risk.

The financing question regulators are not yet answering

The SADC Committee of Central Bank Governors, the body chaired by Kganyago that oversees this system, has signalled that further currencies — the Botswana pula among them — are being prepared for onboarding. That sequencing implies an institutional roadmap toward a genuinely multilateral settlement system rather than a series of one-off bilateral additions. But a roadmap is not a funding plan, and the announcement reviewed for this piece does not specify whether liquidity support for new settlement currencies will come from participating central banks, from commercial correspondent networks, or from some blended arrangement.

For capital allocators — regional banks, development finance institutions, and trade-finance funds — the open question is whether there is a role to play in underwriting the liquidity gap during the early, low-volume phase of a new settlement currency, before transaction flow justifies the balance-sheet commitment on commercial terms alone. That is the kind of gap early, patient capital has historically filled in SADC infrastructure. It is quotable in its own right: a payment rail is only as bankable as the liquidity standing behind it.

Capital treatment and risk-weighting

Banks do not extend a new settlement currency to clients without first working through how it affects their own regulatory capital position. Kwanza exposure, held on a bank's balance sheet as part of a settlement function, typically carries a different risk weighting under prudential capital rules than exposure to a more established reserve or trading currency, which in turn affects how much capital a bank must hold against a given volume of kwanza-denominated business.

That capital-treatment question is likely to shape which banks move quickly to offer kwanza settlement and which hold back, independent of whether the underlying trade opportunity is attractive. [TK]: no source reviewed for this piece specifies how participating banks' prudential regulators are treating kwanza settlement exposure for capital purposes, and that detail matters more than the headline announcement for any institution deciding how aggressively to build on the new rail.

What comes next

The test that will resolve these questions is disclosure, not further announcement. Participating banks and the SADC Committee of Central Bank Governors will need to clarify, in the coming months, exactly how kwanza liquidity is being sourced and priced for institutions using the new settlement rail — information that determines whether this is a low-risk operational upgrade or a capital commitment requiring fresh risk appetite.

Institutions with existing Angola exposure should treat this window — before liquidity arrangements are fully public — as the moment to engage their SADC-RTGS counterparties directly on funding terms, rather than waiting for standardised market pricing to emerge once the corridor is established.

Sources

SADC Source: SADC Secretariat

Institutional Source: SADC Secretariat

Independent / Technical Source: Bank for International Settlements