"Walk me through how you'd build a Sources and Uses table for this deal." It's one of the most common opening questions in private equity and leveraged finance interviews, and it's deliberately deceptive in its simplicity. There's no complicated valuation methodology involved, no discount rate to argue about — just two columns of numbers that have to add up to the same total. But candidates who haven't practiced the structure out loud consistently stumble on the same points: what belongs on which side, and which figure you're actually supposed to solve for. This guide walks through exactly how to build one, step by step, using the same numbers as the Sources and Uses Table practice case so you can check your work against a full model answer afterward.

Why Interviewers Ask You to Build a Sources and Uses Table

Interviewers use this question as a fast filter. It tests whether you understand the mechanical difference between financing a transaction and valuing a business — two things new candidates often blur together. It also tests whether you know that a leveraged buyout is funded by a mix of debt and equity, and whether you understand which figure is actually a free variable and which one is forced by the arithmetic. Get through this cleanly and confidently, and the interviewer immediately knows they can move you on to harder questions about debt schedules, value creation levers, and exit returns. Fumble it, and the interview effectively stalls before it starts.

Step 1: Start With the Uses Side

The single most important habit to build is starting with Uses, not Sources. Uses defines how much capital the transaction actually requires — you can't figure out where the money comes from until you know how much money is needed. In a straightforward corporate buyout, list out three things: the purchase price (usually quoted as Enterprise Value), any existing debt on the target's balance sheet that needs to be refinanced at close, and transaction fees covering financing, advisory, and legal costs.

In the practice case, the Uses side looks like this: a $500 million purchase Enterprise Value, $50 million of existing net debt to refinance, and $15 million of transaction fees. Add those three together and Total Uses comes to $565.0m. Say this total out loud before moving to the Sources side — interviewers notice candidates who rush past this step, and it's the number everything else gets checked against.

Step 2: List What You Already Know on the Sources Side

Not every line on the Sources side is a free variable. Debt tranches are typically sized by lenders based on a multiple of the target's EBITDA and are effectively given to you as an assumption in an interview setting, not something you're solving for. Management rollover equity — the portion of their existing stake that the founders or existing managers are keeping in the deal — is also usually a stated assumption rather than something you calculate.

In the practice case, the known Sources are $250 million of new senior secured debt, $75 million of new subordinated debt, and $20 million of management rollover equity. Add those together and you get $345.0m of known Sources — deliberately less than the $565.0m of Total Uses you calculated in Step 1. That gap is not an error. It's exactly what you solve for next.

Step 3: Solve for the Equity Check (the Plug)

This is the step that separates candidates who understand the exercise from candidates who are just reciting line items. The sponsor's equity investment is not an independent assumption — it's the plug that forces Total Sources to equal Total Uses. The formula is simple: Sponsor Equity = Total Uses − Known Sources.

In the practice case: $565.0m of Total Uses minus $345.0m of known Sources leaves a required sponsor equity check of $220.0m. State this explicitly as the balancing figure, not as a number you "decided" independently — interviewers are listening for exactly this framing, because it shows you understand that Sources and Uses balance by construction, not by coincidence.

Worked Example: A $500 Million LBO

Putting the full table together makes the balancing mechanic concrete.

Uses: Purchase Enterprise Value $500m, Refinancing of Existing Net Debt $50m, Transaction Fees $15m. Total Uses = $565.0m.

Sources: New Senior Secured Debt $250m, New Subordinated Debt $75m, Management Rollover Equity $20m, Sponsor Equity (the plug) $220m. Total Sources = $565.0m.

Notice that Total New Debt Raised comes to $325.0m against a $220.0m equity check — meaning debt funds roughly 57.5% of Total Uses in this deal. That ratio is exactly the kind of leverage figure interviewers will follow up on: is that appropriate for this target, given its cash flow stability and capital intensity? That question connects directly back to what makes a good LBO target in the first place — a business needs predictable free cash flow to service $325.0m of debt comfortably, which is the whole reason PE firms screen targets so carefully before they ever build a Sources and Uses table.

How to Present This in a Live Interview or Paper LBO Setting

In a verbal or "paper LBO" setting, structure your answer the same way every time: state the Uses side first and total it, state the known Sources second and total them, then explicitly solve for the equity check as the plug and confirm that Total Sources now equals Total Uses. Narrating it in this order — rather than jumping between sides — signals to the interviewer that you understand the logic, not just the arithmetic.

If the interviewer gives you incomplete information (a common tactic), say so explicitly and state a reasonable assumption rather than guessing silently. For example, if you're not told the amount of transaction fees, stating "I'll assume transaction fees run roughly 2-3% of the debt and equity raised, so I'll use $15 million here" shows judgment that a memorized formula doesn't.

Common Follow-Up Questions Interviewers Ask

Once you've built the base table, expect follow-ups that test whether you actually understand the mechanic rather than having memorized one specific example.

"What if the target had no existing debt to refinance?"

Total Uses would fall by $50m to $515.0m. If the debt tranches and management rollover stay the same at $345.0m, the sponsor equity plug falls by the same $50m, from $220.0m to $170.0m. This tests whether you understand that changes to Uses flow straight through to the equity check, holding financing sources constant.

"What if part of the fees were financed with debt instead of paid in cash?"

Moving fees onto the debt side raises the debt tranches — and total leverage — by that amount, while lowering the required sponsor equity plug by the same amount. Total Uses is unchanged, but the financing mix shifts toward more debt and a smaller equity check, which increases the deal's leverage risk.

"How does the equity check change if lenders will only provide 4.5x EBITDA instead of 5.5x?"

Less available debt means the known Sources side shrinks, which means the sponsor equity plug has to grow to still cover the same Total Uses. This is exactly the kind of debt-capacity constraint that determines whether a deal can even be structured as an LBO in the first place.

Sanity-Checking Your Answer Before You Present It

Before you say your final numbers out loud, run two quick checks silently. First, confirm Total Sources actually equals Total Uses — in the worked example, $565.0m on both sides. If they don't match, you've either mis-added a line item or placed something on the wrong side of the table; a common error is accidentally netting transaction fees against the purchase price instead of listing them as a separate Uses line. Second, sanity-check the resulting leverage ratio: dividing Total New Debt Raised by Total Uses (here, $325.0m ÷ $565.0m ≈ 57.5%) tells you roughly how aggressive the capital structure is. If that ratio comes out above 80-85%, or the equity check comes out negative, you've almost certainly mis-stated one of your assumptions, and it's worth saying so rather than presenting an implausible answer with false confidence.

It also helps to keep a mental note of what each side of the table is really measuring. The Uses side answers "how much capital does this transaction require in total," independent of how it gets financed. The Sources side answers "who is providing that capital, and in what form." Keeping those two questions separate in your head is what prevents the common mistake of trying to solve for sponsor equity before you've even finished totaling Uses.

Sources and Uses in a Full Model vs. a Paper LBO

In a live "paper LBO" interview — where you're talking through the numbers out loud with no spreadsheet — the goal is to move through Steps 1 through 3 above cleanly and quickly, using round numbers and stating assumptions explicitly. In a take-home modeling test or on the job, the same table becomes the first tab of a full LBO model, and a few additional refinements typically show up: the debt tranches get split further by type (revolver, term loan A, term loan B, subordinated notes), the equity check itself sometimes gets split between the sponsor's fund and any co-investors, and a small cash cushion is often added to the Uses side to fund the target's ongoing working capital needs post-close. The underlying balancing logic, though, is identical in both settings — only the level of granularity changes. If the interviewer explicitly asks for the "quick version," giving them the three-line Uses side and three-line Sources side above, plus the plug, is exactly the right level of detail; over-complicating a paper LBO with tranche-level detail nobody asked for is its own kind of mistake.

How This Connects to MoM and IRR

The equity check you just solved for doesn't just sit on the page — it becomes the denominator of every return calculation that follows. Once you project an exit equity value, you divide by this same $220.0m to get the Multiple of Money, and you annualize that multiple over the holding period to get an approximate IRR. This is why getting the Sources and Uses table right matters so much: an error here doesn't just misstate one line item, it distorts every downstream return metric the rest of the interview builds on.

Sponsors don't just accept whatever equity check the arithmetic produces, either — they often work backward from a target IRR to figure out the maximum price they can afford to pay in the first place, which is the exact logic covered in how to calculate the maximum price to pay for an LBO target. And because the debt in your Sources side isn't free, it's worth being able to connect it to how added leverage changes a company's weighted average cost of capital if the interviewer pushes further into financing costs.

Common Mistakes to Avoid

  • Starting with the Sources side instead of Uses — you can't size the financing until you know how much capital the deal actually requires.
  • Trying to state a sponsor equity figure upfront instead of deriving it as the plug that balances the two sides.
  • Forgetting transaction fees entirely, which understates Total Uses and makes the equity check look smaller than it really needs to be.
  • Confusing Enterprise Value with Equity Value when sizing the purchase price line on the Uses side.
  • Not narrating your assumptions out loud when information is missing — silence reads as uncertainty, while a stated, reasonable assumption reads as judgment.

Practice Case

The best way to get comfortable with this exercise is to work through it cold, without looking at the numbers above, and then check your answer against the full worked solution in the Sources and Uses Table case. Once that feels automatic, pair it with the basic LBO mechanic and why leverage increases equity returns, and review the target-screening framework that determines whether a business can even support the leverage you just built into the Sources side. Together, these three cases cover the full arc of an entry-level LBO conversation, from target selection to financing structure to the return math that ties it all together.