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When Free Cash Flow (FCF) is used to pay back interest after each year rather than deferring all interest payments to the end, the impact on IRR (Internal Rate of Return) and MOIC (Multiple on Invested Capital) can be summarized as follows:

1. IRR (Internal Rate of Return):

  • Higher IRR: Paying interest annually reduces the compounding effect of interest over time. By paying interest earlier, the debt balance decreases faster, which reduces the overall interest expense. This leads to a higher IRR because the cash flows to equity holders are less burdened by accumulating interest costs.

2. MOIC (Multiple on Invested Capital):

  • No Change in MOIC: MOIC is a measure of the total return on investment, calculated as the total cash returned divided by the initial investment. Since the total cash flows generated by the business remain the same regardless of when interest is paid, MOIC is unaffected. The timing of interest payments impacts the distribution of cash flows over time but not the total cash returned.

Key Intuition:

  • Paying interest earlier reduces the compounding effect of debt, which improves IRR (a time-sensitive metric).
  • MOIC, being a cumulative measure, remains unchanged as it does not account for the timing of cash flows.

This distinction is crucial in LBO modeling, as IRR is often more sensitive to the timing of cash flows, while MOIC reflects the overall profitability of the investment.

Sources: EBITDA vs. Operating Cash Flow vs. Free Cash Flow, EBITDA vs. Operating Cash Flow vs. Free Cash Flow, Relationship among Cap Rate, IRR, Discount rate and NPV, How do you get from EBITDA to free cash flow?, LBOs - Why repay debt instead of keeping cash flow?

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But you're paying the lender, not an equity dividend.

To me, the question seems incomplete. Like for the PIK option, is it compounding or non-compounding? Are dividends allowed or no?

If you actually PIKed the interest, dividended the cash instead, and just repaid the debt (principal + PIK interest) out of exit proceeds, I think your IRR is actually better in that scenario than paying the interest as you going along. Both IRR and MOIC outcomes would depend on whether the PIK interest compounded or not during this time.

If the debt compounds and dividends aren't allowed by the credit docs, you're probably better off paying annually since the interest rate on the debt is highly likely to exceed the rate of the company's money market accounts for it's cash. On the other hand, if you can re-invest the FCF and generate a better overall return (i.e., larger company/ higher EV), then there's another variable for ya.

 

Given the context that it's a paper LBO question, I think your no-dividend compounding (and no reinvestment) is probably the scenario interviewers have in mind. Baseline paper LBOs assume cash kind of just sticks around for a debt reduction at the end as opposed to a pure sweep. I think the "take on PIK in order to do mini dividend recaps every year" is...pretty far-fetched for a lender to agree to.

 
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Do you mean debt pay down not interest pay down?

If so, then your interest payments in forward years are lower so both MOIC and IRR are higher assuming a 2CF investment.

If you mean paying interest annually (usually it’s quarterly btw) as opposed to in one bullet payment at the end of the investment, which is uncommon, then, uh..

There is no impact without extra assumptions. For example — you could dividend out the excess fcf and that would increase irr and not impact moic. You could invest the fcf in stuff that creates equity value through either increasing the valuation metric (EBITDA or rev) or the multiple, or even unlocks cash flow by paying a big 4 to reduce working capital for example (I’m sure they’d love that).

If you instead mean a PIK thing,

Then paying cash interest instead of letting it PIK will increase MOIC because the PIK compounds, and also increase IRR for the same reason. There’s no time effect since there are no new investment CFs

 

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