Why the payment jumps in month 14

Your property tax bill and your homeowners insurance premium arrive once a year, in large amounts, on dates you do not control. The escrow account exists so that neither of them arrives as a shock: the servicer collects a twelfth of the annual total with every payment, holds it, and pays the bills when they come due.

That is the whole idea, and it is a good one. What causes the trouble is that the account is not a savings account with your name on it. It is a projection, run under rules that specify how much may be held, how the balance must behave across the year, and what happens when the projection turns out to be wrong. All three of those are in one regulation, and all three are computable.

It matters that the account holds only the escrowed items. A homeowners association fee, if there is one, is not in here — it is billed separately, and a monthly payment quoted to you “with escrow” will not include it.

Block G of the Loan Estimate — “Initial Escrow Payment at Closing” — is not a fee and it is not negotiable, and it is also not arbitrary. It is the exact amount needed so that the account, run forward twelve months with the projected bills coming out on their due dates, never drops below the cushion.

You can watch it work. Below is the projected balance at the end of each of the twelve months of the first computation year, for this case. The insurance premium leaves in the first month and the tax bill leaves in the twelfth, which is why the line climbs all year and falls off a cliff at the end. The lowest point of that line is exactly the cushion, which is what the regulation requires. Anything more than that, and the servicer is holding money it is not entitled to hold.

This is the one number on the closing statement that you can verify yourself with a calculator, and almost nobody does.

At the end of the computation year the servicer re-runs the projection with the bills it now knows about. If those bills are bigger than the ones it projected — and they usually are — two separate things happen, and they take effect on the same monthly statement.

People expect one of them. Almost nobody expects both, and nobody warns them, which is exactly why this shows up in the regulator’s complaint data as surprise rather than as a dispute. There is nothing to dispute: the servicer is doing what the regulation says.

The second one is also the one that ends. The shortage instalment comes off after twelve months; the new base deposit stays. So the payment does not go back to where it was — it goes back to a level that is still higher than last year, one year later.

It depends entirely on how much the bills move, and there is no primary source that says how much they typically move. Rather than pick a number that makes the point nicely, here is the whole ladder: pick the row that matches what you think your county and your insurer are going to do.

Read the ladder for what it is: every row moves BOTH bills together by the same percentage, which is a sensitivity and not a forecast. Nothing in the research quantifies how fast a Texas tax bill grows, so no row here has a source. The one figure that does is the panel below the table, and it is not a row of it: the insurance industry’s own regulators publish a range for how fast homeowners premiums have grown — between 2.4% and 5.3% a year in real terms — so that panel moves insurance at the bottom of that range and holds property tax flat. A zero you can see beats an estimate you cannot check, which is why it sits apart from the ladder instead of dressed up as one of its rows.

Note what the ladder shows about the shape of the problem. The increase is roughly linear in the size of the bill increase, and at the levels that are actually plausible in a fast-reassessing county it is not a rounding error on a monthly payment — it is a car payment.

Everything above assumes the first year was estimated correctly. In a lot of the country — and in Texas in particular — it systematically is not, for a reason that has nothing to do with anyone doing anything wrong.

The initial escrow analysis is built from the tax bill that exists, and the tax bill that exists is the seller’s. If the seller had a homestead exemption and you do not yet, or if the county reassesses the property at what you just paid for it rather than what it was assessed at before, then the bill that lands in your first year is bigger than the bill the account was built for. You have been depositing against the old number for twelve months.

Now the shortage is not a cushion adjustment. It is a real hole, roughly the size of the underestimate, and it arrives at the same moment as the base deposit increase. This is the mechanism behind the payment jumps people describe as coming out of nowhere.

We do not have a primary source for how far off the first-year estimate typically is, so we do not publish a number for it. What we can do is show you the shape, so you know what question to ask before you sign.