PIK Interest: Capitalization, Compounding and Exit Payoff

The core balance roll-forward

For interest capitalized annually on opening principal, calculate PIK before repayment and add it to ending principal. If cash-pay and PIK rates coexist, calculate them separately. Monthly or quarterly compounding changes the result.

PIK interestₜ = Opening PIK-bearing balanceₜ × PIK rate
Ending debtₜ = Opening debtₜ + PIKₜ + new borrowingₜ − principal repaidₜ

Worked example: five years at 8%

A $10m loan with 8% annual PIK and no repayments grows to $10m × 1.08⁵ = $14.693m after five years. Year-one PIK is $0.8m; year-two PIK is $0.864m because interest accrues on the enlarged balance.

At a 10% rate split into 6% cash and 4% PIK, year-one cash interest is $0.6m and principal accretion is $0.4m. If both rates apply to accreted principal, year-two calculations start from $10.4m.

Cash preservation is not free value

PIK does not consume current cash, but it creates a larger senior claim on exit proceeds. A buyout may show higher cash balances during the hold yet lower equity proceeds at exit. Include accrued PIK in the debt-to-equity bridge; do not treat the original face amount as the entire payoff.

Tax and accounting are separate questions

Noncash interest recognition, deduction timing and interest limitation rules depend on jurisdiction and instrument terms. An accounting expense does not prove a contemporaneous cash tax benefit. diophos treats PIK as noncash principal accretion and does not include PIK in its APV tax shields; this is a model convention, not tax advice.

Modeling checks and Excel implementation

A simple no-repayment schedule can use =OpeningBalance*PIKRate and =OpeningBalance+PIKInterest. For real instruments, also model repayment timing, cash/PIK toggles, fees and maturity.

• Reconcile accumulated PIK to the increase in debt principal.
• Keep PIK out of cash interest and cash debt-service totals.
• Check whether covenants include capitalized interest in total debt.
• Include the enlarged balance in exit net debt and downside liquidity review.