Merkel reiterated that EU member states were considering adding pro-Russian separatists to existing sanction lists imposed on Moscow.
But she added at a news conference in Berlin: "Beyond that, further economic sanctions are not planned at the moment."
She said after talks with Pakistan's visiting prime minister Nawaz Sharif that, with the onset of winter looming, the "overarching goal" was to achieve a "real truce".
Five Ukrainian soldiers were killed and nine injured in the east over the past 24 hours, Ukrainian military spokesman Vladyslav Seleznyov said amid fears a shaky ceasefire signed in September could collapse.
Merkel had said last week following disputed elections earlier in the rebel-held east of Ukraine, pro-Russian separatists could be included on Western sanctions lists against Moscow.
She said at the time that there were no immediate plans to reverse the EU sanctions against Russia due to the fresh fighting and the elections which she said were not in the spirit of the tattered truce agreement.
Germany had long dragged its feet on backing sanctions against Moscow with an eye to its lucrative trade ties and long-standing diplomatic and cultural relations with Russia.
But it eventually threw the weight of Europe's top economy behind the measures.
