Diesel Excise Cut Hits 25%: Real Impact of 17 Bani/Liter — NRG-IA

The Ministry of Finance is increasing the temporary excise duty cut on standard diesel from 20% to 25% for the period of September 1–15, 2026, pushing the mechanism to the maximum ceiling permitted under current legislation. The excise duty will be reduced by RON 701.07 per 1,000 liters , down to an effective level of RON 2,103.22 per 1,000 liters , compared to RON 2,243.43 per 1,000 liters in the second half of August. For motorists, the difference between the two fiscal tiers is much smaller than the 25% figure suggests. Moving from the 20% cut to the 25% cut means an additional RON 140.21 reduction in excise duty per 1,000 liters , equivalent to approximately 14 bani/liter before VAT. With a 21% VAT rate, the additional fiscal impact reaches approximately 17 bani per liter of diesel , provided it is fully passed through to pump prices. This is the figure that could directly impact consumers' pockets starting September 1. The 25% reduction does not apply to the final retail price of diesel, but solely to the excise duty. The 25% reduction is the maximum ceiling of the current mechanism The scheme introduced by Law No. 162/2026 operates automatically in 5% increments, based on the evolution of international diesel benchmarks and average pump prices compared to the reference period of February 1–March 29, 2026. For the August 16–31 interval, the Ministry of Finance had calculated a 34.13% increase in the Platts benchmark and a 23.01% rise in the average diesel price , which triggered the 20% excise duty reduction tier. For September 1–15, the pressure is higher: the Platts benchmark is 45.65% above the baseline , and the average pump price is up by 25.45% . Since both indicators have exceeded the 25% threshold, the mechanism now triggers the maximum reduction provided by law. This introduces a significant constraint for the coming months. If diesel prices rise even further, the current fiscal scheme has no higher tier of 30% or 35%. Any larger reduction would require a change in the legislative framework. The total fiscal impact reaches nearly 85 bani per liter Compared to the standard excise duty of RON 2,804.29 per 1,000 liters, the 25% reduction means the state is temporarily waiving RON 0.70107 in excise duty for each liter of diesel . After factoring in VAT, the total fiscal impact could reach approximately RON 0.848/liter (nearly 85 bani), compared to a scenario where the excise duty were fully applied. However, most of this benefit is already in place. The 20% cut, valid between August 16 and 31, yields a fiscal impact of approximately 68 bani/liter including VAT . Increasing the scheme to 25% adds only about 17 bani/liter . For a 50-liter tank, moving from the current reduction to the maximum ceiling theoretically translates to an additional RON 8.5 saved . For an operator consuming 1,000 liters, the incremental difference reaches around RON 170 . The first reduction was immediately visible at the pump The experience of August 16 provides a real-world test of the mechanism. On August 15, standard diesel cost RON 10.67/liter at a Petrom station in Bucharest. On August 16, as the 20% excise duty cut took effect, the price dropped to RON 9.99/liter . This 68-bani drop almost perfectly matched the calculated fiscal impact of the 20% excise reduction, indicating that, on day one, the cut was virtually fully passed on to the consumer. However, the market immediately began moving in the opposite direction. On August 17, Petrom and OMV raised diesel prices by 15 bani/liter, bringing Petrom's price back up to RON 10.14. By August 29, standard diesel in Bucharest was hovering around RON 10.14–10.40/liter , depending on the retail network, while the lowest price identified nationwide was approximately RON 10.09/liter . The national average calculated by PretCarburant.ro stood at around RON 10.23/liter. This outcome illustrates the exact role of the scheme: reducing the excise duty can push prices down, but it does not cap them. Oil product benchmarks, exchange rates, refining and import costs, distribution, and commercial margins continue to drive the final price. Some stations could return below RON 10 if the market remains stable Mechanically applying the additional ~17 bani/liter to current prices provides a picture of the potential fiscal impact starting September 1. A price of RON 10.09/liter would theoretically drop to RON 9.92/liter , and RON 10.14 would fall to around RON 9.97/liter . At a station where diesel currently costs RON 10.20, the result would be around RON 10.03/liter , while a level of RON 10.40 would drop to about RON 10.23. These values represent a fiscal simulation, not a forecast. They assume that all other price components remain unchanged and that the reduction is fully passed on to the consumer. The mere 15-bani upward move observed on August 17 demonstrated how easily the upcoming 17-bani fiscal advantage in September could be offset. The law does not guarantee that every ban…