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After switching my old supplier wants the advance back — can they?

DIRECT ANSWER

A final statement (after switching) must be correct within 6 weeks — not "forgotten" advances popping up months later. Here are your rights and the dispute letter.

Reviewed by FFCheck-redactie · Last reviewed 2026-05-28

On switching, the old supplier has 6 weeks to issue a correct final statement, settling advances against actual consumption to switch date. A "forgotten" advance claim arriving after those 6 weeks is in principle invalid: the statutory window has expired and the supplier may only reopen on demonstrable error or fraud. What to do:

  1. do NOT pay automatically
  2. request in writing a specified calculation + proof of error
  3. on refusalformal dispute letter citing the missed deadline (Energy Act)
  4. complaint to Geschillencommissie Energie. During dispute the supplier may NOT start debt collection or report to credit bureaus.

Related

Final statement is incorrectWrong final statement = suspend payment + formal dispute + Geschillencommissie. We explain the process and provide the letter.Overpaid advance recovery letter An overpaid advance must be refunded within 6 weeks of the final statement. We draft the formal notice. €19.Annual statement not receivedYour supplier must send an annual statement within 6 weeks of contract end or meter reading. Not received? We give the 3-step plan + letter.

Sources

Updated: 2026-05-28

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