Freddie Mac Guidelines: Loan Amortization and Term Requirements

What Amortization Means for Your Mortgage

When Fannie Mae requires "full amortization," they mean your monthly payments must completely pay off the loan by the end of the term. No balloon payments. No interest-only periods that leave you with a balance at the end.

Your payment includes both principal and interest every month. Early in the loan, most of your payment goes toward interest. Later, more goes toward principal. By your final payment, you own the home free and clear.

Say you get a $300,000 mortgage at 7% for 30 years. Your monthly payment of $1,996 stays the same for 360 months. In month one, $1,250 goes to interest and $746 to principal. In month 360, nearly the entire payment goes to principal.

Loan Term Requirements by Program

Fannie Mae offers different loan programs with specific term limits. The 30-year program is most common, but you have options.

For a 30-year program loan, your term must be longer than 15 years but cannot exceed 30 years. Most borrowers choose the full 30 years to minimize monthly payments.

The 15-year program requires a term longer than 84 months (7 years) but no more than 15 years. Your payments will be higher, but you'll pay less interest over the life of the loan.

A 20-year program splits the difference. Your term must exceed 15 years but cannot go beyond 20 years.

The 10-year program works for borrowers who want to pay off their mortgage quickly. The term must be longer than 84 months but cannot exceed 10 years.

How the Term Calculation Works

Fannie Mae measures your loan term from "one month before the first payment due date." This matters more than you might think.

If your first payment is due February 1st, your term starts January 1st. A 30-year loan would mature January 1st thirty years later. Your lender builds this calculation into your loan documents.

For construction-to-permanent loans, the clock starts when your permanent financing begins, not when construction starts. During construction, you typically make interest-only payments on funds already disbursed. The 30-year amortization period begins when construction ends and your permanent mortgage kicks in.

When Your First Payment Must Begin

Your first monthly payment must start within 62 days of receiving your loan proceeds. This prevents extended interest-only periods that Fannie Mae doesn't allow.

Most lenders schedule your first payment for the first of the month that falls 30-45 days after closing. If you close on January 15th, your first payment would typically be due March 1st.

For construction loans, this 62-day rule applies to when you receive the final disbursement, not the initial draw. Your permanent financing payments must begin within 62 days of construction completion.

Why These Rules Exist

Fannie Mae's amortization requirements protect both borrowers and investors. Full amortization ensures you build equity over time rather than just paying interest indefinitely.

The term limits reflect what secondary market investors will accept. Loans longer than 30 years create too much interest rate risk. Loans shorter than 7 years often indicate refinancing rather than home purchases, which doesn't fit Fannie Mae's mission.

The 62-day payment start requirement prevents borrowers from getting extended interest-only periods that could lead to payment shock later.

Common Issues That Complicate Term Requirements

Construction delays can create problems with the 62-day payment rule. If your builder runs behind schedule, your lender needs to document the delay and adjust your permanent financing start date accordingly.

Some borrowers want interest-only payments for the first few years to keep payments low initially. Fannie Mae doesn't allow this structure. Your loan must amortize from day one.

Borrowers sometimes confuse the loan term with the amortization schedule. A 30-year amortization with a 5-year balloon payment doesn't meet Fannie Mae requirements. The loan must fully amortize within the stated term.

Documentation Your Lender Needs

Your loan documents will specify the exact term and amortization schedule. The promissory note must clearly state that the loan fully amortizes through regular monthly payments.

For construction-to-permanent loans, your lender needs documentation showing when construction is complete and permanent financing begins. This typically includes a certificate of occupancy and final inspection report.

Your lender will provide an amortization schedule showing how each payment splits between principal and interest over the entire loan term. This schedule proves the loan fully amortizes by maturity.

Special Considerations for Different Loan Types

Renovation mortgages follow the same rules as construction-to-permanent loans. The term measurement begins when renovation work is complete and you start making payments on the permanent financing.

If you're doing a cash-out refinance, the term starts fresh from your new loan closing date. Your previous payment history doesn't affect the new loan's amortization schedule.

Investment property loans must meet the same amortization and term requirements as primary residence loans. Fannie Mae doesn't offer different terms based on occupancy type for these basic loan structure requirements.

References

For the official guidelines, see 4201.3: Amortization and term in the Fannie Mae Selling Guide.