Financing, Title & Closing · Guide 3 of 6

Documenting Your Funds: Pre-Approval Letters, Proof of Funds and Lender Letters

Sellers want evidence that you can pay before they accept your offer, and many bank and auction sellers require it. The right document depends on how you are paying. This guide matches documents to purchase types, explains what makes each one credible and shows how to share financial statements without exposing more than you need to.

7 min read · Updated November 2, 2026

Key Takeaways

  • A financed offer normally needs a pre-approval letter and a cash offer needs proof of funds; many distressed sales require one or both.
  • Credible documents are recent, come from an identifiable lender or financial institution and match the buyer named on the offer.
  • Auctions usually require certified funds for a deposit or full payment, not just a letter.
  • Redact statements before you share them, and send them only to contacts you have verified.

Why sellers ask for documentation

When you make an offer, the seller wants to know you can actually pay. A letter or statement showing your financing or funds is how you prove it. On a standard resale it makes your offer more competitive. On many distressed purchases it is required: banks selling bank-owned homes often will not review an offer without it, and some auctions ask for proof before you can register to bid.

The document you need depends on how you are paying and who is selling. This guide covers which one fits each kind of purchase, what makes it believable and how to share it safely. It builds on the numbers you gathered when you checked your finances.

Which document fits which purchase

Use the table as a starting point, then confirm the exact requirement in the listing instructions, the bank's offer guidelines or the auction terms. For bank-specific rules, see proof of funds and pre-approval for REO offers.

PurchaseUsual documentWhat the seller is checking
Financed resaleMortgage pre-approval letterThat a lender has reviewed your credit, income and assets for a loan of this size
Cash resaleProof of funds: a recent bank or brokerage statement, or a bank letterThat enough money is available now, without a loan
Bank-owned (REO)Pre-approval or proof of funds, sometimes both, in the format the seller specifiesCertainty of closing; some banks also ask you to be prequalified by a lender they name
Short salePre-approval or proof of funds, sent with the offer package to the seller's lenderThat you can still close after a long approval wait
Foreclosure auctionCertified funds for the deposit or full price; some auctions also want proof of funds to registerThat you can pay by the auction's deadline, with no financing contingency
Hard money or private loanLender letter or commitment, plus proof of your own funds for the down payment and repairsThat the lender is real and the money will be available on time

Some buyers combine documents. An investor using a hard money loan, for example, may send a lender letter for the loan amount and a bank statement showing the cash for the down payment and closing costs. Together they should cover the full price plus your share of costs.

Pre-approval letters

A pre-approval letter from a mortgage lender is the standard document for a financed offer. The guide to getting pre-approved for a mortgage explains the application, the credit check and how long a letter lasts. For an offer, what matters is how credible the letter looks to the seller.

A strong letter generally:

  • Comes from an identifiable lender, with a named loan officer, a license number where required and contact details the listing agent can use.
  • Names every borrower who will be on the loan.
  • States the loan type, such as conventional, FHA or VA, and whether the home will be a primary residence or an investment.
  • Shows a recent issue date and, ideally, an expiration date.
  • Says the lender reviewed documents, such as income and asset records, rather than relying only on what you reported.

A prequalification based on unverified information carries less weight, and many bank sellers will not accept one.

Many buyers ask their lender for a letter tailored to each offer, showing the offer price rather than the maximum approval. That keeps the seller from seeing how much more you could pay. Ask how quickly your lender can turn around updated letters, since competitive and bank-owned sales can move fast.

Proof of funds for cash purchases

For a cash purchase, proof of funds shows the money exists and is available. The usual forms are:

  • A recent account statement from a bank, credit union or brokerage. Sellers set their own window, often the last month or two.
  • A bank letter on the institution's letterhead, signed by an officer, confirming the account holder and available balance as of a date.
  • An online balance screenshot, which some sellers accept but many treat as weak, because it is easy to alter and may not show the institution or account holder.

What makes proof of funds credible:

  • The names match. The account holder should be the buyer on the offer. If you buy through an LLC or trust, show funds in that entity's name or explain the connection, for example with documents showing you control it.
  • The funds are liquid. Cash in checking, savings or money market accounts is easiest to accept. Stocks and funds may be accepted, though sellers know their value can fall. Retirement accounts and other assets that take time to access are often questioned.
  • The total is enough. The balance should cover the price plus your expected closing costs, not just the price.
  • The date is current enough for the seller's rules.

If the money is spread across accounts, provide each statement with a short summary of the total. When the sale closes, the escrow or title company will want the funds to arrive from documented accounts, so avoid shuffling large sums without a paper trail.

Auction funds and lender letters

At a foreclosure auction, a letter rarely substitutes for money. Auction rules usually require certified funds, such as cashier's checks, for a deposit at the sale or for the full amount within a short deadline, and online auctions may take a deposit before you can bid. Read the terms of the specific sale; the guide to financing a foreclosure auction purchase explains how bidders arrange funds in advance.

For hard money and private loans, ask the lender for one of two documents:

  • A letter of interest or pre-approval, which says the lender is willing to lend on a property like this, subject to its review. It helps when making offers but carries less weight with sellers.
  • A commitment letter, issued for a specific property after the lender's review, stating the loan amount, rate, term, fees and conditions. It is stronger evidence, but read the conditions, such as the appraisal, title and your own cash contribution.

Sellers and listing agents may look up a private lender they do not recognize. A lender with a business address, a working phone number and, where the state requires one, a lending license is more convincing. Expect to show your own cash as well, because most short-term lenders do not fund the full price plus repairs.

Sharing statements safely

Bank statements show account numbers, balances, employer deposits and spending history. A seller needs to see far less. Before you send one:

  • Redact what the seller does not need. Hide all but the last four digits of account numbers and, where the seller allows, transaction details. Leave your name, the institution, the statement date and the balance visible. Ask what the seller will accept.
  • Use a real redaction tool. Drawing a black box over text in some PDF editors leaves the text underneath readable. Use a redaction feature that removes the text, or print, mark and scan the page.
  • Ask for a bank letter instead. A letter showing only the balance can replace statements for many cash offers.
  • Send documents only to verified contacts. Share them with your own agent, the listing agent or the closing company, through a secure portal where possible, and confirm unexpected requests by calling a number you already have.
  • Show enough, not everything. If you hold more than the offer requires, consider sharing only the accounts that cover the price and costs.

Keep a note of what you sent, to whom and when. The lender handling your actual loan will need complete, unredacted documents through its own secure process; redaction is for offers, not for your loan application.

Funds documentation checklist

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Frequently Asked Questions

Terms in this guide

Mortgage Pre-ApprovalMortgages & financingA mortgage pre-approval is a lender's conditional commitment to lend up to a set amount, based on verified income, assets and credit. Sellers often expect one before accepting an offer.Earnest MoneyBuying & closingEarnest money is a deposit a buyer puts down when an offer is accepted to show good faith. It is held in escrow and usually credited toward the down payment or closing costs at closing.Hard Money LoanMortgages & financingA hard money loan is a short-term loan from a private lender, secured mainly by the property's value rather than the borrower's income. Investors use it to buy and renovate properties quickly.REO / Bank-Owned PropertyForeclosure processAn REO (real estate owned) or bank-owned property is a home a lender took back after it failed to sell at foreclosure auction. The lender then sells it, usually through a real estate agent.Foreclosure AuctionForeclosure processA foreclosure auction is the public sale of a property after a borrower defaults, where the highest bidder buys it, usually with cash and as-is. If no one outbids the lender, it becomes bank-owned.Short SaleForeclosure processA short sale is the sale of a home for less than the amount owed on its mortgage, with the lender's approval. The lender agrees to accept the reduced proceeds to avoid a foreclosure.MortgageMortgages & financingA mortgage is a loan used to buy real estate, secured by the property itself. If the borrower stops paying, the lender can take the property through foreclosure to recover what is owed.Down PaymentMortgages & financingA down payment is the part of a home's purchase price the buyer pays upfront in cash rather than borrowing. It is usually stated as a percentage of the price and is due at closing.ContingencyBuying & closingA contingency is a condition in a purchase contract that must be met for the sale to go through. If it isn't met by its deadline, the buyer can usually cancel and keep their earnest money.

Disclaimer: The information on this page is for general educational purposes only and is not legal, financial, tax or investment advice. Laws, lending rules and market conditions vary by state and change over time, and any figures shown are estimates. Before you buy, sell, finance or bid on a property, consult a qualified attorney, financial advisor, lender or licensed real estate professional about your situation.