Every residential mortgage loan rests on two documents: a promissory note and a security instrument. The SAFE MLO test expects you to know which one is which, who the parties are, what the key clauses do, and what happens when the borrower sells the home or stops paying. These questions sit in General Mortgage Knowledge, which is 20% of the exam, and the outline names the vocabulary directly: lien, subordinate loans, subordination, conveyance, and assumable loan.
This guide covers the note, the mortgage and deed of trust, the clauses the exam likes, the federal rules that limit them, and the path from default to foreclosure. Every rule was checked on November 1, 2026 against the Fannie Mae/Freddie Mac uniform instruments, 12 U.S.C. 1701j-3, Regulation Z, and Regulation X. This is study information, not legal advice; state law controls many details.
The short version
- The promissory note is the borrower's promise to repay. It creates the debt and the personal obligation to pay it.
- The security instrument (a mortgage, deed of trust, or security deed) pledges the property as collateral and creates the lien.
- In a mortgage, the borrower is the mortgagor and the lender is the mortgagee. The borrower gives the mortgage; the lender receives it.
- In a deed of trust, the borrower is the trustor, the lender is the beneficiary, and a neutral trustee holds the power of sale.
- The acceleration clause lets the lender demand the full balance after a default. The due-on-sale (alienation) clause lets the lender demand the full balance if the property is transferred without consent.
- Garn-St Germain makes due-on-sale clauses enforceable but lists transfers where the lender cannot use them on homes with fewer than five units, such as a transfer to a spouse or into a living trust.
Two documents, two jobs
The exam often tests the difference between the debt and the collateral. The note is the debt. The security instrument is the collateral agreement that ties the debt to a specific property. The Fannie Mae/Freddie Mac uniform note says it plainly in Section 10: a mortgage, mortgage deed, deed of trust, or security deed "dated the same date as this Note, protects the Note Holder from possible losses that might result if I do not keep the promises that I make in this Note."
| Feature | Promissory note | Security instrument |
|---|---|---|
| What it does | Promise to repay the loan with interest | Pledges the property as collateral; creates the lien |
| Who signs | Each borrower who is personally obligated on the debt | Each person with an ownership interest being pledged, which can include a non-borrowing spouse |
| Key terms | Principal, interest rate, monthly payment, maturity date, prepayment, late charge, default | Escrow, insurance, occupancy, transfer of the property, acceleration and remedies, release |
| Recorded in public records? | Usually not | Yes, recorded in the county where the property sits |
| Can it be sold? | Yes. The buyer becomes the "Note Holder" | It follows the note when the note is sold |
That second row is a favorite trap. The uniform Florida mortgage (Form 3010, Section 14) says a person who signs the security instrument but not the note signs only to mortgage, grant, and convey their interest in the property, and "is not personally obligated to pay the sums due under the Note or this Security Instrument." So a spouse who signs only the mortgage gives up their interest in the collateral if the loan goes bad, but does not owe the debt personally.
Hypothecation is the textbook word for this arrangement: the borrower pledges the property as security while keeping possession of it. The borrower lives in the home; the lender holds a lien.
Mortgage, deed of trust, and security deed
Which security instrument is used depends on the state. The exam usually stays at the concept level, so learn the parties and how each one is enforced.
| Mortgage | Deed of trust | |
|---|---|---|
| Parties | Two: mortgagor (borrower) and mortgagee (lender) | Three: trustor (borrower), beneficiary (lender), and trustee |
| Usual foreclosure path | Judicial: the lender files a court action | Nonjudicial: the trustee sells under a power of sale, following state law |
| When the loan is paid off | Lender records a release or satisfaction | Trustee reconveys the property (a deed of reconveyance) |
| Uniform instrument example | Florida Form 3010 | Utah Form 3045 |
The Utah form has the borrower grant the property "to Trustee, in trust, with power of sale."
The two forms also show the two foreclosure paths. The Florida mortgage lets the lender "foreclose this Security Instrument by judicial proceeding." The Utah deed of trust lets the lender "invoke the power of sale," after which the trustee records a notice of default, gives public notice, and sells the property at public auction to the highest bidder. At payoff, the Florida form calls for a release; the Utah form calls for the trustee to reconvey the property.
Some states use a security deed instead (Georgia is the common example, and the uniform instrument list includes a Georgia Security Deed). You may also see the terms lien theory and title theory. In lien theory states, the borrower keeps title and the lender holds a lien. In title theory states, legal title is conveyed to the lender or a trustee until the loan is repaid. For the exam, focus on the parties and the remedies rather than memorizing a state list.
Memory hook: the "-or" gives and the "-ee" receives. The mortgagor (borrower) gives the mortgage to the mortgagee (lender), just as the trustor gives the deed of trust to the trustee.
What is in the promissory note
The Fannie Mae/Freddie Mac Multistate Fixed Rate Note (Form 3200, dated 07/2021) is a good model of what the exam means by a note. Its sections cover:
- Borrower's promise to pay the principal plus interest to the order of the lender. The note states that the lender may transfer it, and anyone who takes it by transfer and is entitled to payments is the "Note Holder."
- Interest at a stated yearly rate, which is the rate "both before and after any default."
- Payments every month, applied "to interest before the Principal," until the maturity date, when any remaining amounts are due.
- Right to prepay. The borrower may make full or partial prepayments "without paying a Prepayment charge." A partial prepayment does not change the due date or monthly payment unless the Note Holder agrees in writing.
- Late charges and default. The note has blanks for the number of days after the due date and the late charge percentage, which the lender fills in under applicable law. The late charge is paid "only once on each late payment." Missing a full monthly payment on the due date is a default.
- Notice of default. The Note Holder may send a notice saying the full balance (the "Default Balance") will be due if the overdue amount is not paid by a date that "must be at least 30 days after" the notice is mailed or delivered.
- Obligations of persons under the note. If more than one person signs, "each person is fully and personally obligated." This is joint and several liability: the Note Holder may collect the full amount from any one signer.
Key clauses in the security instrument
Acceleration clause
Acceleration means the lender can declare the whole remaining balance due now instead of over the remaining term. In the uniform instruments, the lender first sends a notice of default that states the default, the action needed to cure it, and a cure date "not less than 30 days" from the notice (or as state law requires). If the borrower does not cure, the lender may require immediate payment in full and move to foreclosure.
Due-on-sale (alienation) clause
Section 19 of the uniform security instruments says that if all or any part of the property, or any interest in it, is sold or transferred without the lender's prior written consent, the lender "may require immediate payment in full," unless applicable law prohibits it. The lender must give a notice of acceleration with at least 30 days to pay. Alienation is simply the legal word for transferring ownership, which is why the exam calls this the alienation clause.
Right to reinstate
In the Utah deed of trust, a borrower who meets the conditions may reinstate the loan after acceleration at any time up to the later of five days before a foreclosure sale or a longer period set by state law. The uniform form says the right to reinstate does not apply to acceleration under the due-on-sale clause.
Release or reconveyance
When all sums are paid, the lender releases the mortgage or the trustee reconveys the property. The uniform forms allow a fee for this only if it is paid to a third party for services and is permitted by state law.
Garn-St Germain and the due-on-sale exceptions
The Garn-St Germain Depository Institutions Act of 1982 (12 U.S.C. 1701j-3) settled the due-on-sale question nationally. It defines a due-on-sale clause as a contract provision that lets a lender, at its option, declare the loan due if all or part of the property, or an interest in it, is sold or transferred without the lender's prior written consent. It then says a lender may enter into or enforce such a clause notwithstanding contrary state law, subject to the exceptions in the statute. The law also says lenders are "encouraged to permit an assumption" at the existing rate or a blended rate.
For a loan secured by residential property with fewer than five dwelling units (including a co-op unit or a residential manufactured home), the lender may not exercise a due-on-sale clause because of:
- A subordinate lien or encumbrance that does not transfer rights of occupancy (for example, a second mortgage or HELOC)
- A purchase money security interest for household appliances
- A transfer by devise, descent, or operation of law on the death of a joint tenant or tenant by the entirety
- A lease of three years or less with no option to purchase
- A transfer to a relative resulting from the borrower's death
- A transfer where the borrower's spouse or children become an owner
- A transfer to a spouse under a divorce decree, legal separation agreement, or incidental property settlement agreement
- A transfer into an inter vivos (living) trust in which the borrower is and remains a beneficiary and that does not transfer rights of occupancy
- Any other transfer described in regulations
On the exam, a sale to an unrelated buyer, a lease longer than three years, or a lease with a purchase option are the classic transfers that can trigger the clause.
Assumable loans
An assumable loan is one where a buyer takes over the seller's existing loan and its terms. A due-on-sale clause is what usually prevents an assumption without the lender's consent. When the lender consents, the buyer qualifies and takes over the payments. If the original borrower is released from liability, that release is a separate step; without it, the original borrower can stay liable on the note. The conventional, FHA, VA, and USDA guide covers the programs.
Federal limits on loan terms
Prepayment penalties (Regulation Z, 1026.43(g))
A covered closed-end mortgage may include a prepayment penalty only if the penalty is otherwise permitted by law and the loan has an APR that cannot increase after consummation, is a qualified mortgage, and is not a higher-priced mortgage loan. Even then, the penalty:
- Cannot apply after the three-year period following consummation
- Cannot exceed 2% of the balance prepaid during the first two years
- Cannot exceed 1% of the balance prepaid during the third year
A creditor that offers a loan with a prepayment penalty must also offer an alternative loan without one that has the same type of interest rate and the same term. The ATR/QM guide explains which loans are qualified mortgages.
High-cost mortgage limits (Regulation Z, 1026.32(d) and 1026.34)
A HOEPA high-cost mortgage cannot include a prepayment penalty, a balloon payment (with narrow exceptions), negative amortization, more than two periodic payments paid in advance from the proceeds, an interest rate increase after default, or a demand feature. Acceleration is allowed only for fraud or material misrepresentation, failure to meet the repayment terms, or an action or inaction that adversely affects the lender's security. Late charges on a high-cost mortgage cannot exceed 4% of the past-due payment and cannot be charged until the payment is 15 days late (30 days if interest is paid in advance). See the HOEPA guide for the coverage tests.
Servicing rules on payments (Regulation Z, 1026.36(c))
For a closed-end loan secured by the consumer's principal dwelling, the servicer must credit a periodic payment as of the date it is received (with limited exceptions) and may not pyramid late fees, meaning it cannot charge a late fee only because an earlier late fee was not paid. For any consumer credit secured by a dwelling, the creditor, assignee, or servicer must send an accurate payoff statement within a reasonable time, and no more than seven business days, after a written request.
When the note is sold
Selling the note is normal and does not require the borrower's permission. Regulation Z, 1026.39, requires the new owner to tell the borrower. A "covered person" is anyone who becomes the owner of an existing mortgage loan by acquiring legal title to the debt and who acquires more than one mortgage loan in any twelve-month period. The covered person must mail or deliver the disclosure on or before the 30th calendar day after the date of transfer. It gives the new owner's name, address, and phone number and the date of transfer.
A sale of the note is not a transfer of servicing; the owner and the company collecting payments can differ.
Liens, priority, and subordination
A lien is a claim against property that secures a debt. A first lien has priority over junior liens, which matters when the property is sold at foreclosure: senior liens are generally paid before junior ones. Priority usually follows the order in which liens are recorded, subject to state law and exceptions such as property tax liens.
Subordination is an agreement by a lienholder to accept a lower priority. The common exam scenario: a borrower with a first mortgage and a HELOC wants to refinance the first mortgage. Paying off the first would leave the HELOC in first position, so the new first-mortgage lender requires the HELOC lender to sign a subordination agreement putting the HELOC back behind the new first mortgage. A purchase money second mortgage, a separate item on the outline, is a junior lien taken at the time of purchase to finance part of the price.
From default to foreclosure
The SAFE outline lists the foreclosure process under RESPA. Put the pieces in order:
- Default. Under the uniform note, not paying the full monthly payment on the due date is a default. Late charges apply after the grace period stated in the note.
- Early intervention and loss mitigation. Regulation X requires servicers to contact delinquent borrowers and evaluate complete loss mitigation applications. See the RESPA servicing guide for the timelines.
- Notice of default and right to cure. The uniform instruments require a notice giving at least 30 days to cure before acceleration.
- 120-day rule. Under 12 CFR 1024.41(f), a servicer may not make the first notice or filing required by law for any judicial or nonjudicial foreclosure unless the loan is more than 120 days delinquent, the foreclosure is based on a due-on-sale violation, or the servicer is joining a foreclosure action by a superior or subordinate lienholder.
- Acceleration and foreclosure. The lender accelerates the debt and forecloses by judicial proceeding (mortgage) or by trustee's sale under the power of sale (deed of trust), following state law.
- Sale and proceeds. In the Utah deed of trust, the trustee applies sale proceeds first to the expenses of the sale, then to the sums secured, and then pays any excess to the persons legally entitled to it.
Reinstatement (catching up before the sale) and redemption (paying the debt in full to recover the property, with any post-sale redemption period set by state law) are different. The exam may also mention a deficiency judgment, a court judgment for the remaining debt when sale proceeds fall short, and a deed in lieu of foreclosure, where the borrower voluntarily deeds the property to the lender. Whether a deficiency is allowed depends on state law.
Common exam traps
- Mortgagor vs. mortgagee. The mortgagor is the borrower. The mortgagee is the lender.
- Trustee vs. beneficiary. In a deed of trust, the lender is the beneficiary, not the trustee. The trustee is the neutral party with the power of sale.
- Note vs. lien. The note creates personal liability; the security instrument creates the lien. A person can sign one without the other.
- Acceleration vs. due-on-sale. Both accelerate the debt. Acceleration is triggered by default; due-on-sale is triggered by a transfer of the property.
- Garn-St Germain exceptions. Transfers to a spouse, children, a living trust, an heir at death, a junior lien, and a short lease (three years or less, no purchase option) do not trigger the clause on one-to-four-unit homes.
- Prepayment penalties. Never on an ARM, a non-QM loan, a higher-priced mortgage loan, or a high-cost mortgage. Maximum 2%, 2%, 1%, then zero.
- 120 days. The first foreclosure notice or filing generally waits until the loan is more than 120 days delinquent, not 90.
- Selling the note. The new owner gives notice within 30 days after the transfer. The borrower's terms do not change.
Five practice questions
1. In a deed of trust, which party is the beneficiary?
Answer: The lender. The borrower is the trustor, and the trustee holds the power of sale for the lender's benefit.
2. A borrower adds her husband to title on her home. The loan has a due-on-sale clause. Can the lender call the loan?
Answer: No. Under Garn-St Germain, a lender may not exercise a due-on-sale clause on a one-to-four-unit home because of a transfer where the borrower's spouse becomes an owner.
3. A qualified, fixed-rate mortgage that is not a higher-priced mortgage loan has a prepayment penalty. The borrower pays off $200,000 in month 30. What is the maximum penalty?
Answer: $2,000. Month 30 falls in the third year after consummation, so the cap is 1% of the amount prepaid.
4. A borrower wants to refinance his first mortgage and keep his existing HELOC. What document does the new lender most likely need from the HELOC lender?
Answer: A subordination agreement, so the HELOC stays junior to the new first mortgage.
5. A servicer wants to start a nonjudicial foreclosure on a loan that is 95 days past due with no due-on-sale violation and no other lienholder action. May it record the first notice?
Answer: No. Regulation X bars the first notice or filing until the loan is more than 120 days delinquent, unless an exception applies.
For more General Mortgage Knowledge practice, read adjustable-rate mortgages and reverse mortgages, then test yourself with the free SAFE practice test.
Sources
- Fannie Mae legal documents (uniform notes and security instruments), including the Multistate Fixed Rate Note (Form 3200), Utah Deed of Trust (Form 3045), and Florida Mortgage (Form 3010)
- 12 U.S.C. 1701j-3, Preemption of due-on-sale prohibitions (Garn-St Germain)
- 12 CFR 1026.43 (prepayment penalties at 1026.43(g))
- 12 CFR 1026.32 and 1026.34 (high-cost mortgage limits and late fees)
- 12 CFR 1026.36 (payment crediting, late fees, payoff statements)
- 12 CFR 1026.39, Mortgage transfer disclosures
- 12 CFR 1024.41, Loss mitigation procedures (120-day rule at 1024.41(f))
- NMLS, SAFE MLO test content outline
Frequently asked questions
What is the difference between a promissory note and a mortgage?
The promissory note is the borrower's promise to repay the loan, and it creates the personal obligation to pay. The mortgage (or deed of trust) pledges the property as collateral and creates the lien that lets the lender foreclose if the note is not paid.
Is the borrower the mortgagor or the mortgagee?
The borrower is the mortgagor, the party who gives the mortgage. The lender is the mortgagee, the party who receives it.
Who are the parties to a deed of trust?
There are three: the trustor (the borrower), the beneficiary (the lender), and the trustee, a neutral party who holds the power of sale and reconveys the property when the loan is paid off.
What is a due-on-sale clause?
Also called an alienation clause, it lets the lender require immediate payment of the full balance if the property, or an interest in it, is sold or transferred without the lender's prior written consent. Garn-St Germain lists transfers, such as to a spouse or a living trust, where the lender cannot use it on homes with fewer than five units.
When can a mortgage have a prepayment penalty?
Under Regulation Z, only when state law allows it and the loan has an APR that cannot increase, is a qualified mortgage, and is not a higher-priced mortgage loan. The penalty cannot exceed 2% in the first two years or 1% in the third year, and it cannot apply after three years. High-cost mortgages cannot have one at all.
How long must a servicer wait before starting foreclosure?
Under Regulation X, 12 CFR 1024.41(f), the servicer generally cannot make the first notice or filing for a judicial or nonjudicial foreclosure until the loan is more than 120 days delinquent. The exceptions are a due-on-sale violation and joining a foreclosure action by another lienholder.
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Related study guides
- Conventional, FHA, VA, and USDA Loans on the SAFE Exam
- ARMs on the SAFE Exam: Index, Margin, and Caps
- Reverse Mortgages (HECM) on the SAFE Exam (2026 Guide)
- RESPA Mortgage Servicing Rules on the SAFE Exam (2026 Guide)
- HOEPA High-Cost Mortgages and HPMLs on the SAFE Exam
- Ability-to-Repay and Qualified Mortgages: ATR/QM on the SAFE Exam
- NMLS SAFE Practice Test: 25 Free Questions
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