What it means
At its simplest, capital preservation means choosing where to park money on the basis of how unlikely you are to lose it rather than how much it might earn. Typical homes for that money are government treasury bills, insured bank deposits, money market funds and short dated bonds from high quality borrowers.
The common thread is short maturities and creditworthy counterparties, both of which cut the chance of an unpleasant surprise. Businesses apply this thinking to money that already has a job and a date attached to it.
A company holding $3,000,000 for a tax payment due in four months has almost nothing to gain from chasing an extra 1% and a great deal to lose from a market wobble at the wrong moment. The nuance that trips people up is the gap between nominal preservation and real preservation.
If your reserve earns 2% while prices rise 4%, the balance on the statement grows but what it can actually buy shrinks, so capital has been preserved in name only. Tax widens that gap further, because interest is normally taxed in full while inflation is invisible to the tax authorities.
To hold purchasing power steady after tax, the pre-tax return has to beat inflation by enough to cover the tax on the whole return, not merely on the part that represents a real gain. There is also a cost that never appears on any statement: the return given up by staying safe.
Capital preservation is the right call for money that must be there on a known date, and an expensive habit for money with a ten year horizon and no near term claim on it.
In practice
Real-world examples.
Example
A software company raises $12,000,000 and needs roughly $9,000,000 of it over the next eighteen months for hiring. The finance director splits the money across short dated treasury bills maturing in line with the hiring plan, accepting a modest yield in exchange for knowing the cash will be there on the day payroll runs.
Example
A family owned haulage firm sells a depot for $4,500,000 and plans to buy a replacement within a year. Rather than putting the proceeds into equities, the owners hold it in an insured deposit account, because a 15% market fall would cost them the building they intend to buy.
Example
A charity's trustees hold a $6,000,000 endowment and set an explicit capital preservation target measured after inflation. They accept a lower spending rate so that the fund still buys the same amount of grant making in twenty years as it does today.
Think of it
“Capital preservation is protecting your principal-keeping your money safe rather than maximizing growth.
Formula
Calculation
Required nominal return to preserve purchasing power after tax = inflation rate / (1 - tax rate)
A manufacturer sets aside $2,000,000 for a plant upgrade due in a year, expects inflation of 5% and pays tax at 20% on investment income. Required return = 5% / (1 - 0.20) = 5% / 0.80 = 6.25%.
At 6.25% the fund earns $2,000,000 x 0.0625 = $125,000 of interest. Tax at 20% takes $25,000, leaving $100,000, so the balance closes the year at $2,100,000. Because prices rose 5%, that sum buys exactly what $2,100,000 / 1.05 = $2,000,000 bought twelve months earlier, so capital has genuinely been preserved.
Had the money earned only 4%, interest would be $80,000, tax $16,000 and the closing balance $2,064,000. In start of year money that is worth $2,064,000 / 1.05 = $1,965,714, a real loss of $34,286 despite the account statement showing a gain.Case study
Seen in the real world.
The following is an illustrative and entirely fictional story. Harborline Marine Services, an invented coastal logistics firm, held $5,000,000 in a current account for four years while it waited for planning permission on a new quay. Management felt safe, because the balance never moved and no statement ever showed a loss.
When the permission finally arrived, the quotes for the same quay had risen by roughly a quarter, and the board discovered that its untouched $5,000,000 now funded only about four fifths of the project. In this fictional example the company had preserved the number and lost the purchasing power, which forced it to borrow the shortfall at a rate it had never budgeted for.
The made up finance director's response was to write a short treasury policy: reserves needed for a known date go into instruments maturing on or before that date, and the target return is stated in real terms after tax rather than as a headline interest rate.
Watch out
Common mistakes.
- Treating an unchanged bank balance as proof that capital has been preserved, when several years of inflation may have cut its real value by a fifth or more.
- Confusing capital preservation with a guarantee, since even conservative funds carry credit risk and money market vehicles can suspend redemptions in a crisis.
- Applying the approach to long term money such as a pension pot decades from retirement, where playing safe every year is itself a reliable way to fall behind.
Questions
People also ask.
Is capital preservation the same as risk free investing?
No, it is a priority rather than a promise, and every instrument used to pursue it still carries some credit, liquidity or inflation risk.
How much return should a capital preservation strategy target?
Enough to cover inflation and tax on the return, which typically means aiming a little above the prevailing inflation rate rather than at any headline growth number.
Does holding physical cash preserve capital best of all?
It preserves the nominal amount perfectly and the real amount worst of all, because cash earns nothing while prices continue to rise.
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