Using a Promissory Note to Advance Money Against an Inheritance

Your son lost his job, or your daughter is short on a down payment, and you have the money sitting there. You would rather help now than have them wait years for the estate to settle. The trouble is that if you simply hand over the cash, you may quietly shrink what your other children receive later, and nobody will remember the details once you are gone. A promissory note solves this by turning that early money into a documented advance against a future inheritance, so the eventual split stays fair and everyone knows exactly what happened.

This is one of the most common reasons families put a loan in writing, and it is also one of the most misunderstood. So let us work through what actually happens, how to structure it, and how to keep your other heirs from feeling cheated years from now.

Why a Handshake Advance Goes Wrong

Say you give one child $40,000 and tell yourself it will come out of their share someday. You know what you meant. The problem is that memory is not evidence. When you pass away, the executor has no record of the advance, the child who received it may genuinely not recall it the same way, and the other siblings have only your spoken intention to rely on. That is how families end up in probate court over money that was meant as a kindness.

A written note fixes the date, the amount, and the purpose. It tells your executor and your other heirs that this money was an advance, not an outright gift, and that it should be accounted for when the estate is divided. Without that paper, the law in most states will not assume an advance. It will usually treat the money as a gift unless you can prove otherwise.

A Note Versus an Advancement Recital

There are two ways to document money that should be settled against an heir's share, and they are not the same thing.

The first is a true promissory note. The heir signs a promise to repay, and the debt is a real obligation. If they do not repay during your lifetime, the balance is owed to your estate, and your executor can offset it against their inheritance. This is the cleaner option when you want the money to be repayable and want interest to accrue.

The second is an advancement recital, which is language placed in the note or in your will stating that the money is an advance on the recipient's share and should be deducted from what they inherit. An advancement is not really a debt you expect back in cash. It is a bookkeeping instruction for the estate. Many families use a hybrid: a promissory note for the structure and a clear line stating that any unpaid balance is to be treated as an advancement against the borrower's distributive share. That way, if the loan is never repaid, it simply reduces their inheritance rather than becoming a claim the executor has to chase.

If you want the borrower to actually pay you back on a schedule, a plain unsecured promissory note is usually enough between family. If you mainly want fairness at the end, lean on the advancement language so the estate can balance the books without a collection effort.

Interest, No Interest, and the IRS Minimum Rate

You may not want to charge your own child interest, and that is your call to make. But there is a tax wrinkle worth knowing. When you lend a family member a meaningful amount and charge little or no interest, the IRS may treat the loan as a below-market loan and imagine that you charged interest anyway. The benchmark it uses is the Applicable Federal Rate, or AFR, a set of minimum interest rates the IRS publishes every month.

If your note charges interest at or above the AFR for its term, you are on solid ground. If you charge nothing, the IRS may impute interest, meaning it treats you as if you received interest income and, in some cases, as if you gifted that foregone interest back to the borrower. For small, short loans this often does not amount to much, and there are de minimis rules that can spare the smallest loans. But the rates change every month, so do not guess. Check the current AFR for the month you sign the note and consider stating an interest rate at least that high. A short conversation with a tax advisor is cheap insurance when the dollar amounts are large.

What Happens If You Die Before the Loan Is Repaid

This is the whole reason to write the note in the first place. If you pass away with the advance still outstanding, the note becomes an asset of your estate. Your executor adds the unpaid balance to the value of the borrower's share, then offsets it.

Here is a simple picture. Suppose your estate is worth $300,000 and you have three children splitting it equally, $100,000 each. One of them already received a $40,000 advance documented by a note. The executor treats the estate as if it were worth $340,000, gives each child a $113,333 share on paper, then subtracts the $40,000 that one child already received. That child takes home about $73,333 in new money, the other two get $113,333 each, and everyone has received an equal total. The note is what makes that math possible. Without it, the advance disappears and the equal split is quietly broken.

Keeping Siblings From Fighting Later

Most inheritance disputes are not about greed. They are about surprise. A sibling who learns at the funeral that someone else got money years earlier feels blindsided, and that feeling curdles fast. You can prevent almost all of it with two habits.

First, write everything down at the time, with the date, the amount, the purpose, and a clear statement of how it should be treated against the estate. Second, if you are comfortable doing so, tell the rest of the family the plan while you are alive. You do not have to share every dollar, but a simple statement that you are helping one child now and accounting for it later removes the shock. The note is the proof; the conversation is the peace. If you want to see exactly what a clean note looks like, you can start from a promissory note template and adapt it to your situation.

An Advance Is a Loan, Not a Gift

The single most important distinction here is the one people blur the most. A gift is money you give with no expectation of return and no effect on anyone's inheritance. An advance is money you give now that will be settled against the recipient's share of your estate later. They feel similar in the moment because the cash leaves your hands the same way. They are completely different by the time the estate is divided.

If you truly mean to give the money free and clear, say so, and accept that it does not come out of anyone's share. If you mean for it to be balanced against an inheritance, do not call it a gift and do not leave it to memory. Sign a note, state the intent plainly, and let the document carry your wishes across the years when you are no longer there to explain them.

Sources

• IRS, Applicable Federal Rates