South Sudan's ability to raise money against future oil exports has come under fresh pressure after a London court upheld restrictions on new crude prepayment agreements, potentially narrowing an important source of financing for a government heavily dependent on oil revenue.

The ruling comes as the East African nation continues to grapple with fiscal pressures, export disruptions and growing scrutiny over the use of future oil production to secure immediate funding.

According to Reuters, London's High Court upheld an injunction preventing South Sudan from entering new prepayment contracts for Dar Blend and Nile Blend crude while a legal dispute with commodities trader BB Energy remains unresolved.

The order also restricts third parties from facilitating such arrangements until further court proceedings take place.

While the case centres on a commercial disagreement between the government and BB Energy, its implications extend well beyond the courtroom. Oil accounts for roughly 90% of South Sudan's government revenue and the vast majority of its export earnings, making crude sales the foundation of public finances.

For years, the government has relied on advance oil sale agreements, commonly known as prepayment deals, to secure cash upfront in exchange for future deliveries of crude. Such arrangements have become increasingly important as South Sudan faces budget pressures and struggles to diversify revenue sources.

However, they have also attracted criticism from analysts and lenders who argue that excessive reliance on future oil sales can reduce financial flexibility and leave governments vulnerable when production or exports are disrupted.

The latest court ruling comes against the backdrop of challenges that have weighed heavily on South Sudan's oil industry. Since conflict erupted in neighbouring Sudan in 2023, key export infrastructure has faced repeated disruptions. Because South Sudan is landlocked and depends on pipelines running through Sudan to reach international markets, any interruption to that route has immediate consequences for government revenue and foreign exchange earnings.

The dispute with BB Energy stems from allegations that South Sudan failed to deliver crude cargoes purchased under prepayment agreements covering 2024 and 2025. The trading house initiated legal proceedings last year after claiming contracted oil shipments were not fully delivered.

The case is not the first sign of strain within South Sudan's oil-financing system. In recent years, concerns have grown over the extent to which future oil production has been committed under advance-sale arrangements. Economists have repeatedly warned that depending too heavily on oil-backed financing can create long-term fiscal risks, particularly in countries where oil production faces operational, political or security challenges.

Despite the legal dispute, BB Energy said it had received irrevocable letters of award from the South Sudanese government for two crude cargoes scheduled for delivery before November. The company also expressed optimism about continuing commercial discussions regarding future deliveries.

For South Sudan, the bigger issue is how to raise money without putting too much of its future oil revenue on the line. The injunction does not stop South Sudan from exporting oil, but it could restrict the government's ability to use future crude production as collateral for fresh financing. That matters because oil remains the country's primary economic lifeline.

Any limitation on access to oil-backed funding could affect budget planning, public spending and the government's ability to manage financial pressures while export routes remain vulnerable to disruptions beyond its borders.