To prove money was a gift, create a paper trail with a signed gift letter, canceled checks/bank statements showing the money came from the donor's account (not a loan), and other evidence like texts or emails confirming the gift, especially for large amounts or mortgage purposes. This documentation shows the funds were freely given and no repayment is expected, satisfying lenders or legal requirements.
A gift letter is a legal instrument that clearly and explicitly states, without question, that a friend or family member “gifted” - rather than loaned - you money. You can use a gift letter for mortgage lenders who may be questioning a large influx of cash that suddenly showed up in your checking or savings account.
The best way to prove that a transfer of property qualifies as a gift is with evidence of the intent of the donor. The donor must intend to make a permanent transfer without any expectation of receiving something in return.
What Is Needed for a Gift Letter?
Annual exemption
You can give away a total of £3,000 worth of gifts each tax year without them being added to the value of your estate. This is known as your 'annual exemption'. You can give gifts or money up to £3,000 to one person or split the £3,000 between several people.
In the U.S., you can give away or leave up to $13.99 million (in 2025) without triggering federal estate or gift taxes. (In 2026, the amount increases to $15 million under the One Big Beautiful Bill Act.) If you give more than the exemption amount during your lifetime or death, the IRS applies a 40% tax to the excess.
There is a process that must be followed when gifting a sum of money.
The foundation of the Best Evidence Rule is that the original writing, recording or photograph is the 'best' way to prove the actual content of the evidence.
The lender must document the transfer of the funds from the donor to the borrower. Acceptable procedures include obtaining a copy of the donor's withdrawal slip or canceled check, along with the borrower's deposit slip or bank statement showing the deposit to the borrower's account.
Both for the doner and donee, a gift deed ensures proof of such transfer and thus avoids confusions and misuse that may arise in the future.
If receipt or invoice does not indicate payment has been received, then the following are acceptable as proof of payment:
What a proof of funds letter looks like
According to the IRS, a gift occurs when you give property (like money) without expecting anything in return. If you gift someone more than the annual gift tax exclusion amount ($17,000 in 2022), the giver must file Form 709 (a gift tax return).
In California, a gift is legally defined as the transfer of property from one individual to another without receiving anything in return or receiving less than the full value of the property.
The deed should clearly express that the transfer is a gift and not a sale. It should also include such details, such as the legal description of the property and the names of the donor and recipient. A donor must sign the deed.
Some common examples of direct evidence include:
To protect the integrity of the legal process, certain types of evidence may be disqualified from being used. These include: Improper Collection: Evidence obtained through illegal searches or seizures, without a proper warrant or probable cause, is inadmissible under the Fourth Amendment.
To prove money was a gift, the best method is a signed gift letter, often required by lenders, detailing the donor, recipient, amount, relationship, and stating it's not a loan, supported by a paper trail like canceled checks or bank statements showing the source of funds and transfer. This documentation proves the money came from the donor's funds and was freely given, preventing it from being classified as a loan that needs repayment.
Annual Exemption – Everyone has an annual gift allowance of £3000 so this might cover some larger gifts which are more than £250 but less than £3,000. If you did not use the full £3,000 last year, you are able to carry it forward to the current tax year meaning you could potentially gift a maximum of £6,000.
The donor must intend to transfer title, not do so by error. And the donor must not expect payment in any way in return for the gift. Absence of consideration. A transaction based on exchange of value is not a gift transaction.
You do not need to declare cash gifts you receive on a self assessment tax return. There may be inheritance tax implications for you and the person who has given you this gift, particularly if the donor (giver) of the cash gift dies within seven years of making the gift.
Gifts that are worth less than £250
You can give as many gifts of up to £250 to as many individuals as you want. Although not to anyone who has already received a gift of your whole £3,000 annual exemption. None of these gifts are subject to Inheritance Tax.
In addition to being able to gift the $17,000 annually, each individual person has what's called a “lifetime gift exemption.” This is the amount the government allows you to give away during your life or as part of your estate at death before estate taxes kick in. In 2023, this amount stands at almost $13 million.