A glowing purple-to-teal dial sits above an industrial vault mechanism whose steel bolts extend into stacked loan documents and ledgers, two of them converging on the same page, illustrating what happens when capital instruments are not integrated into one structure.

Integrating the Instruments: How the Pieces of a Stack Fit Together

September 14, 2026•10 min read

The Capital Instruments | Part Three of Three

You now have the instruments. The Capital That Funds the Cycle: Lines, Advances, and the Borrowing Base covered the layer that funds the needs that come and go, and The Capital That Funds Assets and Permanence: Term Money and the Role of Equity covered the base layer that funds the needs that stay, and each instrument fits a shape and a duration. But naming the pieces is not the same as building the structure, because a real business runs several of these at once, and the moment it does, they stop being separate facilities and start being one system, with parts that either reinforce each other or pull against each other.

This article is about making them fit. A stack is not sound because each instrument is well chosen. It is sound because the well-chosen instruments hold together: they do not fight over the same collateral, they do not impose conditions that strangle one another, and the whole of what they demand each period stays inside what the business can actually repay. Integration is the difference between a set of good facilities and a working stack, and it is the last thing to get right before the stack is built.

Key Points

Choosing each instrument well is necessary but not sufficient. A stack holds only when the instruments fit together as one structure.
Instruments interact in three main ways: they claim collateral, they impose conditions on the business and on each other, and together they make a total demand on cash each period.
Collateral has to be sorted, so two facilities are not relying on the same assets in conflict, and so each layer is supported by the assets that fit it.
Conditions, the covenants each facility carries, have to be livable together, because a stack of individually reasonable conditions can combine into a set that leaves the business no room to operate.
The whole stack, every payment across every facility, must fit inside repayment capacity. That total is the test the entire structure passes or fails.

Why Isn't a Good Set of Instruments Automatically a Good Stack?

Because the instruments are not independent. Each one makes claims and imposes conditions that touch the others, so a stack assembled from individually sound facilities can still be unsound as a whole. Three kinds of interaction do most of the work, and reading them is what integration means.

The first is collateral: what assets stand behind each facility, and whether any two are relying on the same assets. The second is conditions: the covenants each facility carries, the things the business promises to do or not do, and whether those promises are livable in combination. The third is the total demand on cash: the sum of every payment across every facility, and whether that sum fits inside what the business generates to pay it. A stack works when all three resolve cleanly. It strains when any one of them is left to chance, and the strain usually appears not at the moment the stack is built but months later, when a covenant trips or two lenders discover they are counting on the same receivables.

Sorting the Collateral

Most facilities are supported by assets, and in a stack the question is which assets support which facility, and whether the answer is clean. A cyclical facility drawn against the borrowing base relies on receivables and inventory. A term loan may rely on equipment or property. Equity sits underneath all of it, supporting nothing specific and everything generally. When these are sorted well, each facility is backed by the assets that fit it and no two are quietly depending on the same collateral.

The trouble comes when they overlap without being resolved. If a working capital line and a term facility both look to the same assets, and their claims are not ordered, the business has promised the same collateral twice, and the conflict surfaces at the worst possible moment, when the business is under strain and both lenders reach for the same security. Lenders resolve this among themselves through the order of their claims, who is repaid first from a given asset, and an owner does not need to engineer that. What an owner needs is to see it clearly: to know which assets back which facility, to avoid promising the same collateral in ways that conflict, and to keep the borrowing base that supports the cyclical layer clean, since that is the collateral doing the most work.

Keeping the Conditions Livable

Every facility carries conditions, the covenants that come with it: financial ratios the business agrees to maintain, limits on what else it can borrow, requirements to report on a schedule. Each one, on its own, is usually reasonable. The risk in a stack is combination. A business can agree to a sensible condition on its line, a sensible condition on its term loan, and a sensible condition on a third facility, and find that together they leave no room to run the business, because satisfying all three at once forces choices none of them intended.

So covenants are read as a set, not one at a time. The questions are whether the combined conditions can all be met in a normal year, whether they can still be met in a slow one, and whether any of them conflict, so that meeting one breaks another. A stack whose conditions are livable in good times and survivable in bad is a stack the business can actually operate inside. A stack whose conditions only work if everything goes right is a trap that springs the first time something does not, which is precisely when the business can least afford it. Reading the conditions together, before they are agreed to, is how that trap is avoided.

Does the Whole Thing Fit Inside What You Can Repay?

This is the test the entire structure passes or fails, and it is the same governor the last series named: repayment capacity. Each instrument was matched to its need, and each is sound on its own. Integration asks the question none of them answers alone, which is whether the sum of everything they demand each period fits inside the cash the business actually generates to pay it.

Add up every payment across every facility, the interest and principal on the term loans, the service on the drawn portion of the line, everything the stack requires in a period, and set that total against repayment capacity, the cash the business generates after everything it must spend to keep running. If the total fits, with room to absorb a slow stretch, the stack is sized correctly. If it does not, the stack is oversized, regardless of how well each instrument was chosen, and the answer is to rework it, not to hope for a good year. This total is the number that decides whether a well-designed, well-instrumented stack is actually a stack the business can carry.

Testing the Whole Stack

Put the three together and you have a way to test a stack before you commit to it, which is the light version of the tool a Capital Intelligence Report builds in full. Lay out every facility in one place. For each, note the need it funds, its shape and duration, the assets that back it, the conditions it carries, and the payment it demands. Then read the whole: is every need matched to capital of the right shape and duration; is the collateral sorted so nothing conflicts; are the conditions livable in combination, in a good year and a slow one; and does the total demand fit inside repayment capacity with room to spare. A stack that passes all four is built to hold. A stack that fails any one has a weak point to fix before it is signed, not after.

That whole-stack read, matching and collateral and conditions and total service assessed as one, is the Capital Intelligence Method™ applied to the assembled structure, and it is the discipline behind the stack-building tool in a Capital Intelligence Report. It is what turns a collection of facilities into a structure that stands.

The Instruments Are Chosen and Fit Together. One Question Remains.

You can now design a stack and build it from real instruments: match each need, choose the instrument that fits, sort the collateral, keep the conditions livable, and size the whole to what the business can repay. That is the full capability this series set out to teach, from naming the instruments that fund the cycle, through the instruments that fund permanence, to making them all fit together as one structure.

What's left is putting the whole framework in one place: how a business reads its own needs, chooses the instruments that fit each one, and assembles them into a single stack that holds, from the first cyclical draw to the equity underneath it all. That complete picture, structure and instruments together, is The Working Stack: From Instruments to Structure, where this series comes together.

Frequently Asked Questions

Can two different loans rely on the same collateral?

They can, and when their claims on that collateral aren't sorted out, it becomes one of the most damaging conflicts a stack can have. If a working capital line and a term facility both look to the same receivables or equipment without an ordered claim between them, the business has effectively promised the same collateral twice. The conflict usually doesn't surface when the stack is built, it surfaces months later, under strain, when both lenders reach for the same security at once. An owner doesn't need to engineer the legal order of claims, lenders resolve that among themselves, but does need to know which assets back which facility and avoid promising the same collateral in ways that conflict.

What is a covenant, and why do covenants matter in combination?

A covenant is a condition attached to a facility, such as a financial ratio to maintain, a limit on further borrowing, or a reporting requirement. Individually most covenants are reasonable. The risk is combination: a business can agree to sensible conditions on several facilities and find that together they leave no room to operate, because meeting all of them at once forces impossible choices. Covenants are read as a set, tested for whether they can all be met in a normal year and survived in a slow one, before they are agreed to.

How do you know if a stack is too large?

By testing the total against repayment capacity. Add up every payment across every facility in a period and set that sum against the cash the business generates after everything it must spend to keep running. If the total fits with room to absorb a slow stretch, the stack is sized correctly. If it does not, the stack is oversized no matter how well each instrument was chosen, and it should be reworked rather than carried in hope of a good year.

What is the difference between designing a stack and integrating one?

Designing a stack, the subject of the previous series, is matching each need to capital of the right shape and duration and sizing the whole to repayment capacity. Integrating a stack is making the chosen instruments fit together as one structure: sorting the collateral so nothing conflicts, keeping the combined conditions livable, and confirming the total service fits repayment capacity. Design chooses the pieces; integration makes them hold together.

A Capital Intelligence Report builds this same whole-stack read in full, matching, collateral, conditions, and total service, so the instruments chosen actually hold together as one structure. An advisor takes it from there. See what your own numbers actually show.