No-cost extension

A no-cost extension gives you more time and no more money. The end date moves; the award amount does not. It exists because research and development slip for reasons nobody controls: a delayed recruitment, a supplier failure, an ethics approval, a pandemic.

It must be requested before the current end date, and typically well before: many funders require notice weeks or months in advance. Asked for afterwards it does not exist as an option, and this is the single most common way a project ends with unspent money and undelivered work.

In the American system many awards permit a one-time extension of up to twelve months that the recipient may initiate itself, notifying the agency rather than seeking permission. Subsequent extensions need approval and a real justification. European amendments always need approval, and every beneficiary must sign.

"Because we have money left" is not a justification anywhere. Funders want to hear what work remains, why it slipped, and what the extra months will produce. An unspent balance is evidence that something did not happen, not a reason in itself.

The extension does not extend everything. Reporting obligations, personnel commitments and sometimes sub-agreements have their own dates and may need separate amendment. Check what else moves before assuming the whole project simply shifts.