"We don't rule out that further space budget cuts would continue in the upcoming years," Efe news agency quoted Yuri Koptev, head of the scientific-technical Council of Roscosmos, as saying.
Russia's moon landing plan requires at least $34 billion (roughly Rs. 2,26,870 crores) until 2025, according to Koptev.
Roscosmos head Igor Komarov said in April that Roscosmos would keep implementing space exploration projects despite the economic difficulties and try to help Russian cosmonauts land on the moon no later than 2030.
Russia's space strategy charted by Roscosmos until 2030 regards the moon missions as a step toward a manned flight to Mars.
The reform of Russia's space industry became imperative following a recent string of launch failures, and many enterprises in the industry are in bad need of financial optimisation and state support to pay off their multi-billion debts.
Russian Deputy Prime Minister Dmitry Rogozin in May criticized the country's space industry for ineffective management and excessive capacity, calling for urgent reform and tougher punishment for mission failures.