How a 5/6 or 7/6 ARM Lowers a Bank Statement Loan Payment

The Quick Read: A 5/6 or 7/6 ARM lowers your payment because the lender prices the fixed window below its long-term fixed option, and that smaller payment feeds your debt-to-income ratio. Your bank statement income calculation does not change. Only the payment side of the ratio shrinks, and only for the fixed years.

• The label: A 5/6 is fixed for five years, then adjusts every six months. A 7/6 is fixed for seven years, then adjusts every six months.
• The discount: Against a fixed loan from the same lender, the ARM discount is usually modest. It moves with loan size, credit score and leverage.
• The catch: The payment used to qualify you is not always the payment you make in the first year. Programs differ on this point.
• The fit: An ARM works best when you expect to sell or refinance before the fixed window ends, and when your deposits are steady.
• The reset: After the fixed window, the rate becomes an index plus a margin, limited by caps. Test that capped payment against your rent or income.

What Do 5/6 and 7/6 Actually Mean?

The first number is how many years the rate stays fixed. The second number is how often the rate can change afterward, counted in months. So a 5/6 is fixed for five years, then adjusts every six months. A 7/6 holds for seven years, then adjusts on the same six-month schedule.

A common mix-up is reading the second number as years. A 5/6 does not adjust once every five years. It adjusts twice a year once the fixed window closes. The older 5/1 format adjusted once a year, which is why you still see both labels.

Why the Payment Is Lower

Because the balance and the amortization schedule are the same, the lower starting rate means a lower principal-and-interest payment. That is the whole mechanism. Nothing about the loan amount or the schedule changes.

The size of the discount is where people get misled. On most files across the wholesale network, the discount against fixed is modest, not dramatic. It shifts with the day’s pricing, your credit score, your LTV (loan-to-value, the loan balance divided by the property value) and your loan size. The 7/6 usually carries a smaller discount than the 5/6, because you are buying a longer fixed window. An ARM is not automatically cheaper, so compare actual quotes side by side.

Lender math runs on that quoted payment. Taxes, insurance and any HOA dues sit on top of it. The ARM only trims the principal-and-interest piece, so the total housing payment shrinks by less than the ARM discount might suggest.

Where Bank Statement Income Fits

The ARM and the bank statement income are two separate levers. Income sets how much you earn on paper. The ARM sets how big the payment is. Here is the chain a bank statement loan follows:

1. You provide 12 months of business or personal statements. 2. The lender adds up eligible deposits and removes transfers, loan proceeds and similar items. 3. On business accounts, the lender applies an expense factor. Each program sets its own. 4. The result is averaged into one monthly income figure. 5. That figure is compared against your debts, including the proposed housing payment, to produce your DTI (debt-to-income ratio, your monthly debts divided by your monthly income).

The file is reviewed on documented income under the applicable program, subject to lender guidelines. Your income figure is the same for a fixed loan and an ARM. A lower payment in the numerator pushes DTI down. That can help you stay inside a program’s DTI limit, or leave more room for other debts. Whether it raises your purchase price ceiling depends on the qualifying-payment rule covered below.

This is why the ARM matters for self-employed borrowers in particular. Deposit-based income is often lumpy, so the payment side is the only part you can price-shop. HousingWire reports that non-QM loans make up roughly 10% of U.S. origination volume. It also reports that bank statement loans are about 34% of that non-QM volume. In other words, plenty of self-employed borrowers are already choosing this structure.

Leverage and Occupancy Change the Picture

Occupancy decides which rules apply to the file, and it also sets the leverage you can use. Typical ceilings on select lenders’ programs in the network look like this:

Stronger files earn the top of each range. Loan sizes generally run from $125,000 to $3,500,000, and reserves are commonly around six months of the housing payment. All of this is subject to lender guidelines. This is not a commitment to lend.

Owner-occupied files are consumer mortgages, so TRID disclosure rules apply and the Loan Estimate shows the index and margin. A bank statement loan on a non-owner-occupied rental, including a short-term rental, is business-purpose and exempt from TRID. On that file, ask for the index, margin, caps and floor in writing, because no consumer disclosure form will do it for you. If you want to qualify a rental on its rent coverage instead of your deposits, the complete DSCR loans guide covers that route.

For a second home, Lendmire has a piece How to Source a Down Payment on a Second-Home Bank Statement Loan.

Which Payment Does the Lender Qualify You On?

This is the step where “lower payment” is most often overstated. The payment that goes into your DTI is not always the payment on your first statement. It depends on how the program treats the gap between your note rate and the fully indexed rate. The fully indexed rate is the index plus the lender’s margin.

On consumer-purpose, owner-occupied loans, the federal ability-to-repay rule is the starting point. Regulation Z §1026.43 says the creditor must use the greater of the fully indexed rate or any introductory rate, and the payment must be fully amortizing. A discounted teaser does not get to stand in for the real rate. Interest-only periods do not count as the qualifying payment under that test either.

Here is how that plays out in practice:

• Note rate at or above the fully indexed rate: the lower payment helps your DTI in full.
• Note rate discounted below index plus margin: the qualifying benefit shrinks, and it can disappear.
• Business-purpose investment loans: the rule’s scope generally excludes them, as the scope paragraph of the rule lays out. The qualifying method is then set by the program’s own sheet.

That last point matters for investors. Programs differ on whether they qualify an ARM at the note rate, at a higher fully indexed rate, or at some other test. Ask the loan officer which one applies before you count on a lower DTI.

A lower ARM rate does not always mean a lower qualifying payment. If the fully indexed rate is higher than your note rate, the qualifying payment can be higher than the one you pay in year one.

5/6 Versus 7/6 Side by Side

The 7/6 gives you a longer runway and usually a smaller discount. The 5/6 gives you a bigger discount and a shorter runway. Neither wins on every file.

Run the decision on your hold period, not on the headline discount. If you plan to sell or refinance in three years, the longer fixed window of a 7/6 buys protection you may never use. If you are unsure about your timeline, the extra two years of certainty on a 7/6 may be worth the smaller discount.

This one is a genuine toss-up for borrowers who plan a five-year hold. The 5/6 saves more upfront, but a delayed sale or a tough refinance puts you into a reset sooner. Many investors in that spot pick the 7/6 as insurance, and the choice is reasonable either way.

After the Fixed Window: Index, Margin, Floor and Caps

Once the fixed window ends, your rate becomes the index plus the margin. The margin is written into the note and does not change after closing. The index moves. Many ARMs now use an average of the Secured Overnight Financing Rate (SOFR), though non-QM ARMs are not required to use it and some use other indexes.

Three caps limit how far the rate can move:

• Initial adjustment cap: limits the first reset.
• Periodic cap: limits each later change.
• Lifetime cap: limits the total increase over the life of the loan.

Caps slow the climb, but they do not prevent a large cumulative jump. Stack a first reset, then several six-month steps, and the payment can end up well above where it started.

Can the payment go down? Yes, if the index falls. A floor can limit that benefit. Some notes set a floor equal to the margin or another minimum, so the rate never drops below it. Read the floor line in the note.

Ask the lender for the worst-case payment under the caps. That number is the one to test against your rent or income.

ARM, Longer Fixed Term and Interest-Only Compared

Three levers can lower a starting payment. They behave differently, and they do not always stack.

Interest-only and 40-year structures are more common on DSCR loans than on bank statement loans. Alt-doc terms follow each lender’s program sheet, so ask what term options exist before assuming any are available. If a program offers an interest-only ARM, find out whether it is reviewed around the interest-only payment or on the fully amortizing one. That answer is program-specific.

Stacking levers lowers the starting payment further. It also adds more risk at reset.

Risks Specific to Self-Employed Borrowers

Income swings change how a reset feels. Deposit-based income can drop in a slow year, and a payment reset can land in exactly that year. A W-2 borrower with a raise coming has one kind of risk. A self-employed borrower with seasonal deposits has another.

The exit plan is the second risk. An ARM assumes you can sell or refinance before the reset. For bank statement borrowers, the constraint on that refinance is often documentation, not credit. If your recent deposits are lower than the 12 months that qualified the first loan, the refinance gets harder. Leverage matters too. On an investment property, cash-out refinance tops out around 75% LTV, so a property that has not gained value may leave you with less room than you expect.

Investor ARMs often carry a prepayment penalty. That affects a refinance-before-reset plan, so confirm the penalty period before you choose a short fixed window.

Tax treatment varies; consult a qualified professional.

Who Should Pick an ARM, and Who Should Not

An ARM tends to fit when your hold or refinance horizon is shorter than the fixed window, your deposits are steady, and your plan does not depend on a bigger refinance. It tends to fit poorly when you plan to hold long term with no exit, or when your income is volatile and a payment jump would strain you.

A simple hold-period test:

• Planning to hold under five years: a 5/6 may be worth the larger discount.
• Planning five to seven years: a 7/6 usually fits better.
• Planning to hold beyond seven years: a fixed rate often makes more sense, unless you expect to refinance.
• Unsure about the timeline: price both and look at the worst-case payment.

On larger loans, the payment discount from an ARM covers more dollars, so the savings can look bigger. The reset exposure grows by the same proportion. Run the capped worst-case payment first, then decide whether the discount is worth carrying that risk.

Questions to Ask Before You Choose

Bring this list to the loan officer:

1. Which payment will I be qualified on: note rate or fully indexed rate?

2. What are the index, margin and floor?

3. What are the initial, periodic and lifetime caps?

4. What is the worst-case payment under the caps?

5. Is there a prepayment penalty, and for how long?

6. Which terms are available on this program: fixed, ARM, longer amortization?

Get the answers in writing. Compare them across at least two programs.

Key Terms Defined

ARM: An adjustable-rate mortgage, where the rate changes after an initial fixed period.

Fully indexed rate: The index plus the lender’s margin, which is what your rate becomes after the fixed window.

Margin: The fixed number of points the lender adds to the index. It is written into the note and does not change.

Rate cap: A limit on how much the rate can rise at the first reset, at each later reset, or over the life of the loan.

Expense factor: The percentage a lender subtracts from business deposits to reflect the cost of running the business.

Reserves: Liquid savings, commonly around six months of the housing payment, that remain after closing.

Next Step

The brokerage arranges financing through select lenders in its wholesale network, so you can compare fixed and ARM structures across programs. The quote tool at lendmire.com has an illustrative calculator for the payment side.

About Lendmire

Lendmire, NMLS# 2371349, is a mortgage brokerage that arranges investor and alt-doc financing through select lenders in its wholesale network, including DSCR investor loans in 40 states plus Washington, D.C. — 41 markets total. Bank statement loans qualify on documented income under the applicable program, subject to lender guidelines, while DSCR loans on rentals look primarily to the property’s rental income. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. HousingWire, non-QM loans guide

2. CFPB Regulation Z §1026.43

3. Cornell LII, 12 CFR 1026.43