Four-Year Education Loan Planner

Why a four-year view changes the picture

A single year of borrowing looks manageable. Four years stacked together is a different story. Each year adds a new layer of debt, and because federal loans are usually deferred until after graduation, interest on the unsubsidized and Parent PLUS layers quietly builds the whole time. This page models the full arc: borrowing during school, interest accruing, and then repayment.

Annual limits vs. lifetime limits

Federal loans have two kinds of ceilings. An annual limit caps how much you can borrow in one academic year. An aggregate limit (also called a lifetime limit) caps the total you can owe across all years. A dependent undergraduate can borrow up to $31,000 in Direct Loans across all four years, of which up to $23,000 can be subsidized. Independent undergraduates can borrow up to $57,500. Parent PLUS is capped at $65,000 in total per student. When a plan would cross one of these ceilings, the extra shows up as an unfunded gap.

What "deferred until after graduation" means

Deferment means payments are postponed. Federal student loans are typically deferred while the student is enrolled at least half time, plus a six-month grace period after leaving school. This page assumes a four-year program and a six-month grace, so the first payment lands about four and a half years after freshman year begins.

The hidden cost of in-school interest

For a subsidized loan, the government pays the interest during school and grace, so the balance does not grow. For unsubsidized and deferred Parent PLUS loans, interest accrues from the day the money is disbursed. Because year-one money sits the longest, it accrues the most. When repayment finally starts, that built-up interest is capitalized — added to the principal — so you then pay interest on the interest. The "balance at repayment" tile shows how much bigger the debt has become before a single payment is made.

When Parent PLUS repayment starts

Unlike student loans, a Parent PLUS loan normally enters repayment as soon as it is fully disbursed — the parent starts paying right away, while the student is still in school. That is the calculator's default, and it is usually the cheaper choice: paying from the start means the interest never piles up and gets capitalized.

A parent can instead request to defer Parent PLUS until after the student leaves school. That delays the bills, but interest accrues the whole time and is added to the balance, so the total cost goes up. Toggle "Begin Parent PLUS repayment immediately" off to see that difference. When it is on, notice that the Parent PLUS band in the balance chart starts shrinking during the college years instead of growing.

Why year-one borrowing is the most expensive

A dollar borrowed freshman year accrues interest for roughly four and a half years before repayment even starts. The same dollar borrowed senior year accrues for only about six months. Front-loaded borrowing costs more, which is one reason to lean on the cheapest sources early and revisit the plan each year.

Five numbers, and how they differ

Amount borrowed is the principal you signed for. Net proceeds is what reaches the school after the origination fee. Interest paid is the cost of carrying the debt — including the interest that built up in school. Total repayment cost is everything sent to the servicer. Total cost of borrowing is fees plus interest — the true price of using the money.

Lower payments do not mean lower cost

Stretching repayment over more years lowers the monthly bill but adds months of interest, so the lifetime cost usually rises. The monthly number and the total number move in opposite directions.

Key takeaway

This tool is not encouraging anyone to borrow the maximum. Over four years it shows how much debt is taken on, how interest grows before repayment, who is responsible for each loan, and whether a gap remains after federal loans are exhausted. Borrow the cheapest, most protected money first, watch the lifetime caps, and treat Parent PLUS with care.