Younghusband wanted the payment to be met by yearly instalments; it would have taken about 75 years for the Tibetans to clear their debt, and since British occupation of the Chumbi valley was surety until payment was completed, the valley would remain in British hands.
Younghusband ønskede, at betalingen skulle opfyldes med årlige afdrag; det ville have taget omkring 75 år for tibetanerne at afbetale deres gæld, og da den britiske besættelse af Chumbi-dalen var kaution, indtil betalingen var afsluttet, ville dalen forblive i britiske hænder.