IFMP Fixed Income Securities Certification (FISC), Pakistan common mistakes
IFMP Fixed Income Securities Certification (FISC), Pakistan · Understand the traps and how to avoid them.
Computing a bond's price by discounting every cash flow at the coupon rate instead of at the market yield, so a bond trading at a discount or premium is priced at par.
Candidates memorize P = C/(1+y) + ... but default to y = coupon because that is the only rate given in the question, forgetting that the yield is the discount rate and the coupon only sets the cash flows.
What to do instead
Before calculating, write the discount rate explicitly on your scratch sheet and label it as the market yield. Sanity-check the result: if yield > coupon the price must be below par, if yield < coupon it must be above par, and if the two are equal the price must equal par. Practise three quick cases (discount, premium, par) until the direction check is automatic.
Mixing up clean price, dirty price and accrued interest, and quoting the wrong figure when a question asks for settlement amount or invoice price.
In Pakistan's market, as in most, bonds are quoted on a clean basis but settle on a dirty basis; candidates learn the terms in isolation and never connect quotation convention to cash settlement.
What to do instead
Anchor on one rule: invoice (settlement) price = clean price + accrued interest. Accrued interest = coupon x (days since last coupon / days in coupon period). When a question asks what the buyer pays, always add accrued; when it asks what is quoted, use clean. State the convention in one line before computing.
Applying the wrong day-count convention, for example using 30/360 for a Pakistan Investment Bond (PIB) or Treasury bill when the instrument actually uses actual/actual or actual/365.
Day-count conventions are treated as trivia rather than as a computational input; candidates default to 30/360 because it is easiest to compute, without checking the instrument's stated convention.
What to do instead
Build a one-page table of conventions by instrument (PIBs, T-bills, corporate sukuk, commercial paper) and memorize which applies. In every calculation, write the convention name before the numbers. Practise one accrued-interest calculation per convention so the arithmetic pattern is familiar.
Confusing Macaulay duration with modified duration and using the wrong one in a price-sensitivity question, or misreading duration as a maturity figure.
Both are labelled 'duration' and differ only by a (1 + y/m) factor, so candidates grab whichever formula comes to mind first; the distinction between weighted-average time and percentage price change is not internalized.
What to do instead
Fix the definitions: Macaulay duration is the weighted average time to cash flows in years; modified duration = Macaulay / (1 + y/m) and gives the percentage price change for a 1% yield change. For any price-sensitivity question, start from modified duration and the formula %ΔP ≈ -D_mod x Δy, then add convexity only if the question asks for a large yield move.
Ignoring convexity and treating the duration estimate as exact, so the estimated price change for a large yield move is reported without the convexity adjustment.
Duration is taught first and convexity later, and candidates under time pressure stop at the linear approximation; they also forget that the approximation overstates price falls and understates price rises.
What to do instead
Adopt a threshold rule: for yield changes beyond roughly 50-100 basis points, include the convexity term 0.5 x C x (Δy)^2. Remember the direction: convexity adds to the price estimate on both up and down moves, so the duration-only estimate is too low on rallies and too high on sell-offs. Practise one large-move example to see the gap.
Treating a Treasury bill discount rate as a yield to maturity, or failing to convert between discount yield, bond-equivalent yield and holding-period return.
T-bills are quoted on a discount basis using face value and 360 days, but candidates apply the same formula they use for coupon bonds, producing a yield that understates the true return.
What to do instead
Memorize the T-bill discount formula: discount rate = (F - P)/F x 360/t, and the investment (bond-equivalent) yield = (F - P)/P x 365/t. Note the two differences: the denominator (face vs price) and the day base (360 vs 365). Work one bill through all three measures so the conversions become mechanical.
Assuming a floating-rate note's price stays at par after a rate reset, or failing to identify the reference rate and reset mechanics in a question.
Candidates learn fixed-coupon pricing thoroughly and carry the intuition over; they miss that a floater reprices to par at each reset only if the discount margin is zero and the next coupon is set at the current reference rate.
What to do instead
For any floater question, identify three things first: the reference rate (for example 6-month KIBOR), the reset frequency, and the quoted margin or discount margin. Then reason: at reset, coupon = reference + margin, so price ≈ par if the discount margin equals the quoted margin; price moves away from par only when the discount margin differs or between resets as the reference rate changes.
Misreading the yield curve: assuming an upward-sloping curve always means expected rate rises, or predicting the wrong price effect from a steepening versus a parallel shift.
The pure expectations, liquidity preference and market segmentation theories are memorized as labels, not as competing explanations; candidates then apply one theory to every curve shape and confuse a change in slope with a change in level.
What to do instead
Separate the two questions: what explains the shape (expectations, term premium, segmentation, supply) and what is changing (level, slope, curvature). For price effects, apply duration to the level change and use key-rate or bucket durations for slope changes, noting that a steepening hurts long bonds relative to short ones. Practise describing a twist in one sentence before computing.
Answering credit questions by rating alone, ignoring the recovery rate, seniority, covenants or the credit spread decomposition in the question.
Ratings are the most visible credit signal, so candidates stop there; they miss that expected loss = probability of default x loss given default, and that spread compensates for expected loss, liquidity and risk premium.
What to do instead
For every credit question, write expected loss = PD x (1 - recovery) before anything else. Check seniority and security, since secured and senior debt recover more. When asked to decompose a spread, split it into expected loss, liquidity premium and risk premium rather than attributing it all to default risk.
Overlooking the tax and regulatory treatment of fixed income in Pakistan, such as withholding tax on profit payments, the distinction between filer and non-filer rates, or the tax treatment of discount income on T-bills versus coupon income on PIBs.
Candidates focus on pricing mechanics and treat tax and regulatory rules as background reading, but exam questions frequently test after-tax yield and net-of-tax cash flows, and the filer/non-filer distinction changes the answer materially.
What to do instead
Keep a short reference card of the current withholding tax treatment for profit on debt, the filer versus non-filer rate differential, and how discount versus coupon income is taxed. For any after-tax yield question, convert the cash flows to net terms first, then compute the yield, and state the tax assumption in one line.