What it means
Proof of funds answers one blunt question that every seller asks: can you actually pay? It is standard in property purchases, business acquisitions, large tenders and some import contracts, where a seller does not want to take a deal off the market for a buyer who cannot complete.
The key word is liquid. Cash in a current account, a money market balance or readily sellable listed securities normally count, while the value of a property you intend to sell, an unused credit facility or a verbal promise from an investor usually does not.
The evidence comes in two main forms. A statement shows an account balance on a given date, while a bank comfort letter confirms that the customer holds funds sufficient for a stated purpose, often without revealing the exact balance.
Sellers tend to look at three things: the amount, the age of the document and whether the funds are encumbered. A statement more than a month or two old, or one showing money already pledged as security for another borrowing, will usually be rejected.
There is a practical cost worth planning for. Parking a large sum in cash to satisfy a proof of funds request means giving up whatever return that money would otherwise earn, so experienced buyers time the transfer to sit just before an offer goes in.
In practice
Real-world examples.
Example
An agent asks two bidders on an $850,000 warehouse for proof of funds before presenting their offers. One provides a bank statement showing $260,000 of cleared cash against the $220,000 of deposit and costs required; the other sends a screenshot of a pending share sale. The seller proceeds with the first bidder even though the second offer was $10,000 higher.
Example
A buyer negotiating to acquire a $3,000,000 logistics firm is asked for proof of funds covering the $900,000 equity portion of the price, with the balance debt financed. She supplies a broker statement showing $1,100,000 in a money market account and a signed lender term sheet for the remaining $2,100,000. The seller's advisers accept the package and grant a six-week exclusivity period.
Example
A council running a $4,000,000 construction tender requires bidders to demonstrate unrestricted working capital of at least 10% of the contract value. One contractor produces a bank letter confirming $520,000 of available cash, clearing the $400,000 threshold and staying in the competition while two rivals are eliminated.
Formula
Calculation
There is no single formula, but the working test is: Qualifying Funds = Cash + Readily Marketable Securities - Pledged or Restricted Amounts, and this must cover Deposit + Closing Costs. A buyer is bidding $1,200,000 for a commercial unit with a 20% deposit and $35,000 of legal, survey and transfer costs. Required funds = ($1,200,000 x 0.20) + $35,000 = $240,000 + $35,000 = $275,000. The buyer's evidence shows $180,000 in a current account plus $150,000 in a money market fund, less $20,000 pledged against a business overdraft: $180,000 + $150,000 - $20,000 = $310,000. Coverage is therefore $310,000 / $275,000 = 1.13 times the requirement, a surplus of $35,000.Case study
Seen in the real world.
Harborline Ventures, an illustrative and entirely fictional family investment company, learned the cost of weak documentation when bidding for a $2,400,000 mixed-use building. Its offer required proof of funds for the $480,000 deposit plus $60,000 of transaction costs, a total of $540,000.
The company held $700,000, but $250,000 of that sat in a fixed deposit that could not be broken for another four months and a further $40,000 was pledged against a vehicle facility. Qualifying funds were therefore $700,000 - $250,000 - $40,000 = $410,000, which fell $130,000 short of the requirement and cost Harborline the deal.
In this fictional example the fix was administrative rather than financial. The family restructured its holdings so that at least $600,000 sat in an instant-access account during any active bidding period, and it secured a comparable building at $2,100,000 three months later.
Watch out
Common mistakes.
- Assuming a mortgage pre-approval or a credit facility letter is proof of funds; both evidence borrowing capacity, not cash you already hold.
- Sending a statement that shows a large balance for a single day, when sellers and their lawyers look for funds that have genuinely been in place rather than money moved in to create an impression.
- Handing over complete unredacted statements with account numbers and unrelated personal transactions on show, when a redacted statement or a short bank letter would satisfy the request.
Questions
People also ask.
How recent does proof of funds need to be?
Most sellers and agents want a document dated within the last thirty to sixty days, and many ask for a refreshed copy shortly before completion.
Does a letter from my accountant count?
Rarely on its own, because an accountant confirms records rather than a live balance, so a bank-issued statement or letter carries far more weight.
Can retirement or investment accounts be used?
Sometimes, if the money can genuinely be withdrawn or sold quickly, but anything with a lock-in period or a heavy tax penalty is usually discounted or ignored.
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