The Quick Read: It depends on whether your household could carry the payment after the rate adjusts using base salary alone. The pay-down plan leans on vests that are not guaranteed, and the ARM only saves money if you actually send the extra principal. If the plan survives a bad stock year, the ARM can work. If it needs every vest to land, a fixed loan is the safer pick.
Will a Lender Count Your RSUs?
Yes, often, but only vested shares count. Restricted stock units are shares your employer promises you, released on a vesting schedule. Until a share vests and lands in your account without restrictions, a lender treats it as a hope, not income.
Jumbo payment estimate
The starting figures are an example price in the jumbo range with ten percent down on a thirty-year fixed. Replace them with yours.
Editable benchmark: 7.40% as of October 15, 2026 · Freddie Mac 30-year average via FRED®. A conventional market reference, not a jumbo loan quote.
Illustrative starting assumptions: a $1,000,000 price in the jumbo range, ten percent down on the top-leverage lane, a thirty-year fixed structure at the current Freddie Mac conforming benchmark, and property taxes and insurance estimated at typical national rates. Every field is editable.
Illustrative estimate only — not a Loan Estimate, approval, quote, or commitment to lend. The rate field carries the weekly Freddie Mac thirty-year conforming benchmark, a market reference and not a jumbo loan quote; jumbo rates are set by the lender and the lane at lock and differ from the conforming benchmark. An adjustable-rate scenario is shown at the benchmark for the whole term; the rate after the initial period is unknown. Reserve months and appraisal counts follow the lane sheet for the amount band; the automated finding may require more. Taxes, insurance and dues are editable estimates; closing costs are not included. On most lanes the conforming limit for the county decides whether a loan is jumbo at all; two lanes start at a stated dollar floor instead. Licensed in sixteen states for consumer mortgages.
Fannie Mae added RSUs as eligible income in its Selling Guide. Many jumbo lenders borrow that logic, though each sets its own overlays. Across the wholesale programs I place files with, the pattern is consistent: lenders want a documented vesting history, proof the shares were actually delivered, and reason to believe the income continues.
| Item | Usually counts? | Why |
|---|---|---|
| Vested, distributed shares | Yes | Already in your hands |
| Unvested shares | No | Can still be forfeited |
| Sign-on grants vesting over time | Generally no | Not a proven income stream |
| Time-based grants, about 12 months of history | Often yes | Pattern is easy to document |
| Performance-based grants | Needs longer history | Less predictable |
A mortgage insurer’s RSU job aid summarizes the Fannie Mae approach this way. It describes a 12-month minimum for time-based awards, a longer history recommended for performance-based awards, and a lender check that the income will continue for three years. Treat those as the conventional benchmark. A jumbo lender may be stricter, so verify against your own file.
Expect to bring a brokerage statement showing past distributions, your RSU agreement and vesting schedule, recent pay stubs, and sometimes a verification-of-employment form that reflects distributions.
Here is a trap that catches tech borrowers. Front-loaded grants vest heavily in early years and then taper. On paper that can look like falling income, even when your refresh grants fill the gap. If you have a big new-hire grant rolling off, tell your loan officer early.
How Does a Jumbo ARM Work for an RSU Earner?
A jumbo ARM starts with a fixed-rate period, then adjusts. A jumbo loan is simply a mortgage above your county’s conforming limit, which the FHFA sets and updates yearly. Above that line, the loan falls outside the standard agency framework, so each lender sets more of its own rules.
An adjustable-rate mortgage (ARM) ties part of its rate to an index. When the index rises, your payment can rise. The CFPB’s ARM handbook explains that ARMs carry periodic and lifetime caps, and that caps can differ for the first change versus later ones. It also notes your servicer must warn you before the first adjustment.
Two points matter most for you:
- The low starting payment is not what you qualify on. For ARMs, lenders generally size the payment on a higher qualifying rate. The CFPB’s ability-to-repay rule uses the greater of the fully indexed rate or the initial rate. Some programs go stricter for shorter fixed periods.
- Your RSU income gets averaged, then tested at that higher payment. That can lower the maximum loan compared with what the teaser payment suggests.
In the jumbo lanes I work with, the adjustable structure carries a tighter ratio ceiling than the fixed lanes: 45% versus 50%. That means less room for debt relative to income on an ARM. Leverage reaches 90% on the headline lane, with a 660 decision score, and loans go to $5,000,000 on the largest lanes. Reserves, measured in months of the full payment, rise with the loan amount. Every figure is subject to lender guidelines and a full file review, and none is a commitment to lend. You can see how the structures compare on Lendmire’s jumbo loan programs page.
What Does “Pay Down Fast” Actually Do?
It shrinks the balance, but it does not remove the rate risk. This is the part most people get wrong. Extra principal lowers what you owe. The rate on whatever remains still adjusts when the fixed period ends.
So the plan has two moving parts. First, your extra payments must happen. Second, the rate after the fixed period must stay tolerable on the smaller balance. Pay down hard and the second risk shrinks. Skip a few vests and it doesn’t.
Some practical mechanics for RSU earners:
- Vests arrive in lumps. Quarterly vests mean lumpy pay-down. Many borrowers set a rule: a fixed share of every vest goes to principal the week it lands.
- Withholding often falls short. Employers commonly withhold at a flat supplemental rate, so your actual tax bill on a vest can exceed what was held. Set aside cash for that before you count the vest as pay-down money. Tax treatment can depend on your situation; borrowers should speak with a qualified tax professional before relying on any deduction or credit.
- Extra payments versus a recast. Extra principal payments lower your balance right away. A recast, where the lender re-computes your payment on the lower balance, is a separate lender-offered process. Terms vary by lender and servicer, so ask before you rely on one.
- Check for a prepayment penalty. The CFPB explains that a prepayment penalty is a fee some lenders charge if you pay off all or part of the mortgage early. It typically applies only if you pay off the full balance within a set window, usually three or five years. In some cases a large lump sum could trigger it. Not every mortgage has one, and non-qualified jumbo products can differ, so read your Loan Estimate and note.
ARM With Pay-Down vs. Fixed: Side by Side
| Factor | ARM + pay-down | Fixed |
|---|---|---|
| Payment certainty | Fixed period only | Full term |
| Early cash flow | Usually more room | Less room |
| Reset exposure | Yes, softened by lower balance | None |
| Depends on RSU vests | Heavily | Less so |
| Ratio ceiling (our lanes) | 45% | 50% |
| Stock-drop sensitivity | High | Moderate |
| Needs a refinance or exit | Often | No |
Here is the honest read. The ARM wins on early cash flow. The fixed loan wins on sleep. If your plan to pay down fast depends on a single employer’s stock, you are stacking two bets on one company: your paycheck and your mortgage payoff. Neither is wrong. Both together is concentration.
How Do You Stress-Test the Plan?
Run three scenarios before you sign. Pick the loan you could survive in the worst of them, not the best.
The stock falls. Vested shares are worth less, so each vest sends less cash to principal. Your balance at the first adjustment ends up higher than you planned. Ask whether the payment still works on that bigger balance.
You lose the job. RSUs usually stop vesting when employment ends. Your income and your pay-down source disappear together. This is the scenario that breaks the strategy most often, and no loan structure fixes it, but reserves can help. A cushion that covers the payment at its cap buys you time to find the next role.
The rate is higher at the first adjustment. Take your balance after the pay-down you realistically expect, then picture the payment at the loan’s cap. That is your test. A simple version: could you carry that payment on base salary alone, without any RSU income? That is a framing device, not a lender rule. If the answer is no, the pay-down plan is carrying more weight than it should.
One more wrinkle. An interest-only ARM, which pays only interest for a set stretch, typically three to ten years per the CFPB handbook, then jumps in payment even if rates stay flat. That is a different risk from a standard amortizing ARM, and it deserves its own conversation.
Which Borrower Profiles Fit the ARM?
The ARM tends to fit when:
- Base salary alone covers the payment at the loan’s cap.
- You expect to sell or refinance before the fixed period ends.
- You hold meaningful reserves outside employer stock.
- Your vesting history is long and your refresh grants are steady.
Choose fixed if:
- You would need RSU income to afford the adjusted payment.
- You are a new hire leaning on a single front-loaded grant.
- Your employer stock is already most of your net worth.
- You plan to stay in the home a long time and value certainty.
Private-company or pre-IPO equity is a special case. Some lenders accept only publicly traded employer stock, and the rules differ between lenders, so ask early. Also, this article covers a primary residence. Second homes follow different leverage rules, and occupancy decides which lane applies.
Frequently Asked Questions
Do I have to sell shares to qualify?
No. Lenders look at the income from vested shares you have received, not a requirement that you sell. Selling is a separate choice about taxes and concentration. Keeping the shares for reserves or a down payment can help the file, though lenders document and value those assets their own way.
Does an ARM change how my RSUs are counted?
Not directly. The RSU income is evaluated the same way. What changes is the payment you must qualify on, which is typically higher than the starting payment. That higher test payment, combined with a tighter ratio ceiling on the adjustable lane, can reduce how much you can borrow.
What if I have under two years of vesting?
It may still work. Time-based grants often need roughly a year of history, while performance-based grants usually need longer. If RSU history is short, a lender may exclude that income and qualify you on salary, or weigh offsetting factors. Each lender decides.
Can I recast instead of refinancing?
Sometimes. A recast re-computes your payment after a large principal payment, and it is a lender-offered option, not a right. Terms and fees vary by lender and servicer. Ask before closing whether your loan allows one.
Is there a prepayment penalty on a jumbo ARM?
Not always. Federal rules limit penalties on qualified mortgages, but some non-qualified jumbo products differ. Check your Loan Estimate and note for any prepayment terms before you plan on large lump sums.
If you are buying a home and want to see whether a jumbo loan fits your file, Lendmire can help you compare the options and what each one asks of the file. For a related look, read Lendmire’s piece Is an ARM Sensible for a Jumbo Cash-Out You Will Pay Down Fast?.
For your own numbers, request a scenario review with Lendmire.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage broker licensed for consumer lending in 16 states. Lendmire arranges FHA, VA, conventional and jumbo purchase and refinance loans through wholesale lenders; every file is underwritten by the lender under the applicable program guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. Fannie Mae Selling Guide B3-3.1-09, Other Sources of Income
3. FHFA – 2026 conforming loan limit news release
4. CFPB – Consumer Handbook on Adjustable-Rate Mortgages
5. CFPB – What is a prepayment penalty?
This article is part of Lendmire’s jumbo loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How to Pay Off a PACE Assessment Before a Jumbo Cash-Out · Can You Use a Jumbo Cash-Out on RSU Income to Pay Off a Margin Loan? · How to Check Whether a Purchase Will Be Jumbo in Your County
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosure information. Lendmire is a state-licensed mortgage brokerage under NMLS# 2371349. Lendmire is not a depository institution, direct lender, or financial advisor — all loans referenced are placed through wholesale lender partners and are subject to each lender's underwriting standards. This article is provided for general informational purposes and is not a commitment to lend, nor does it constitute financial, legal, or tax advice. Loan programs, terms, rates, and qualification standards change without notice and depend on borrower profile, property type, and the state in which the subject property is located. Equal Housing Opportunity provider. NMLS Consumer Access: nmlsconsumeraccess.org.