The United States said that although sanction relief will begin immediately the full benefits will not be released until the deal reaches its end.
The United States and the rest of our P5+1 partners will also take steps, in response to Iran fulfilling its commitments, to begin providing some limited and targeted relief.
The $4.2 billion in restricted Iranian assets that Iran will gain access to as part of the agreement will be released in regular installments throughout the six months.
The final installment will not be available to Iran until the very last day.
More top news
Cold and sunny for most, increasingly cloudy from the west. Cloud and wind spreading from the west of UK.
A woman, 63, was allegedly grabbed from behind and dragged to the ground in a serious assault near a nature reserve.
A 21-gun salute was first sounded in the capital, Havana, as Castro's ashes were taken to the cemetery in eastern Cuba.