Omaze is a for-profit company. Officially, our competitions are 'sweepstakes,' and it's important to note that there are varying legal interpretations on whether a contribution that also awards people consideration (chances of winning a grand prize) is deductible. If you choose to write off your donation, you can use the confirmation email we sent you at the time of purchase for documentation. In many states within the US, no additional receipt is required for contributions of $250 or less. If the expenditure is $250 or more, please email us at firstname.lastname@example.org and we will issue a receipt.