How Franking Credits Change a DDM Valuation for ASX Banks

At a share price of roughly $6.25, Bank of Queensland’s (ASX: BOQ) fully franked dividend of 34 cents per share looks modest on paper. Factor in the franking credits attached to that payout, however, and the grossed-up yield jumps to nearly 7%. The question is whether that yield justifies the price, and that is precisely what the Dividend Discount Model is built to answer.

Australian bank shares are among the most widely held equities in the country, yet most retail investors evaluate them using only the headline dividend yield. The DDM goes further, translating a dividend stream and a growth assumption into an explicit estimate of what a share is theoretically worth today. For fully franked bank stocks, the model carries a particular advantage: franking credits alter the effective yield in ways that can shift the implied valuation meaningfully.

What follows is a step-by-step DDM walkthrough using BOQ as a live case study. It covers how to incorporate franking credits into the calculation, builds a sensitivity table across a range of assumptions, and explains why averaging across scenarios produces a more defensible estimate than relying on any single output.

Why Australian bank shares suit the Dividend Discount Model

The DDM values a stock by discounting its future dividend payments back to the present. That means it works best when dividends are stable, predictable, and large relative to earnings. Australian banks tick all three boxes.

The dividend discount model has roots stretching back to 1938, when economist John Burr Williams formalised the idea that a stock’s true worth is simply the sum of its future income payments discounted to the present, a principle that remains embedded in the CFA Institute curriculum and institutional equity research today.

A stock is well suited to the DDM when it has:

• Stable dividends with a long history of consistent or gradually rising payments
• A high payout ratio, meaning most earnings are returned to shareholders rather than reinvested
• A mature earnings base that is unlikely to double or halve in any given year

BOQ, Bendigo and Adelaide Bank (ASX: BEN), and the four major banks all fit this profile. Their dividends are frequently 100% fully franked, and their payout ratios tend to sit well above those of growth-oriented sectors.

Bendigo and Adelaide Bank offers a useful comparison point: applying the same DDM framework to BEN’s FY2026 fully franked dividend shifts the implied value from approximately $9.27 on a cash basis to $13.24 once franking credits are incorporated, a proportionally similar adjustment to what the BOQ analysis produces.

None of this makes the DDM a precision instrument. It is one of several valuation tools and works best alongside price-to-earnings multiples and price-to-book comparisons rather than in isolation. Analysts typically layer more than 100 hours of qualitative work on top of any financial model before forming a view. The DDM gives that work a quantitative starting point, not a final answer.

The three inputs the model needs and what each one does

Every DDM calculation rests on three inputs, and every output is only as trustworthy as the assumptions behind them.

1. The base dividend per share: the most recent annual dividend the company paid. For BOQ, this is the FY24 full-year dividend of 34 cents per share, fully franked.
2. The assumed dividend growth rate: the annual rate at which dividends are expected to increase going forward. For a mature bank, this typically falls in the 2% to 4% range.
3. The discount rate: the return an investor requires to hold the stock given its risk. It is usually constructed from the risk-free rate (the RBA cash rate serves as a proxy) plus an equity risk premium and a stock-specific adjustment. An illustrative range for BOQ might run from 6% to 11%.

The relationship between the growth rate and the discount rate is where the model becomes sensitive. Narrow the gap between the two, and the implied valuation climbs sharply. Widen it, and the valuation compresses just as fast. A single percentage point shift in either input can move the fair value estimate by dollars, not cents.

The RBA cash rate target serves as the standard risk-free rate proxy when constructing a discount rate for Australian equity valuations, meaning any shift in the cash rate feeds directly into the denominator of the DDM formula and alters every cell in the sensitivity table.

DDM outputs are a function of assumptions, not facts. The model is a structured way to make your assumptions explicit, not a device for eliminating uncertainty.

That sensitivity is the central reason the worked example later in this article uses a range of scenarios rather than a single estimate.

How franking credits change the calculation for Australian investors

For Australian resident investors, the DDM has an extra layer. When a company pays a fully franked dividend, it has already paid 30% corporate tax on the profits funding that payout. Eligible investors receive a franking credit for that tax, effectively grossing up the dividend they receive.

The formula is straightforward:

Grossed-up yield = Cash yield ÷ (1 − 0.30)

Applied to BOQ’s 34-cent fully franked dividend, the gross dividend comes to approximately 48-49 cents per share (34 ÷ 0.70). That is roughly 44% more income flowing into the model.

The effect on valuation is substantial. Using the DDM with averaged assumptions across the 6-11% discount rate and 2-4% growth rate ranges, the cash-dividend-based estimate comes to approximately $7.19. Substituting the grossed-up dividend lifts the estimate to approximately $10.57.

One caveat applies. The full value of franking credits is only realisable by investors who can utilise them: generally Australian resident individuals and complying superannuation funds. Tax-exempt entities and foreign investors cannot claim the credit, which means the cash-dividend DDM is the more appropriate input for those holders.

The grossed-up dividend yield is not a rounding adjustment; for an SMSF in pension phase, the entire franking credit amount can be claimed as a cash refund from the ATO, meaning the after-tax income received can materially exceed what the headline cash yield implies.

The ATO franking credit eligibility rules stipulate that investors must satisfy a 45-day holding period requirement around the ex-dividend date to claim imputation credits, a condition that affects how the grossed-up dividend figure should be applied in any DDM calculation.

For eligible investors, however, franking credits are not a bonus. They are a material component of total return, and ignoring them understates the effective yield.

Building the BOQ valuation: a worked DDM example

The standard DDM formula is:

Fair Value = Annual Dividend ÷ (Discount Rate − Dividend Growth Rate)

Building the estimate for BOQ follows five steps:

1. Identify the base dividend: BOQ’s FY24 dividend of 34 cents per share, fully franked.
2. Choose a growth rate: an assumed annual increase in dividends (e.g., 2%, 3%, or 4%).
3. Choose a discount rate: the required return given risk (e.g., 6%, 8.5%, or 11%).
4. Apply the formula: divide the dividend by the gap between discount rate and growth rate.
5. Repeat across scenarios and average to reduce dependence on any single assumption.

At a 3% growth rate and an 8.5% discount rate, the formula produces: 0.34 ÷ (0.085 − 0.03) = $6.18. At a 6% discount rate and 4% growth, the output jumps to $17.00. At 11% and 2%, it falls to $3.78.

The range between those extremes, from under $4 to over $17, illustrates why a single-point estimate is misleading for a model this sensitive.

From single estimate to scenario average

The sensitivity table below shows how the DDM output shifts across combinations of discount rate and growth rate, using the 34-cent base dividend.

Averaging across these nine scenarios produces a central estimate of approximately $7.19, which sits above BOQ’s reference price of roughly $6.25. Using an adjusted forecast dividend of 35 cents (consistent with analyst expectations for a modest increase), the averaged estimate edges up to approximately $7.40.

No single cell in this table is the answer. The average across a deliberately wide range of assumptions is the discipline that makes the DDM useful rather than dangerously precise.

Where the model breaks down: DDM limitations investors should understand

The DDM assumes a stable, perpetually growing dividend. That assumption can break in several ways, and knowing where it breaks is what separates useful application from false confidence.

Key limitations for bank stocks include:

• Cyclical earnings: Bank profits are tied to credit conditions. A spike in bad debts or a sustained margin compression episode can force a dividend cut, violating the model’s core assumption. BOQ’s FY24 was characterised as a “reset year,” with earnings under pressure from higher funding costs.
• Payout ratio constraints: BEN’s payout ratio has been characterised at around 70-80% of cash earnings, leaving limited room for dividend growth unless earnings lift. Elevated payout ratios mean the dividend is already consuming most of available profit.
• Discount rate sensitivity: Using too low a discount rate, particularly in a post-rate-hike environment, can make any bank stock appear cheap on DDM even when credit risk or competition tells a different story.
• Exclusion of qualitative factors: Property market conditions, unemployment trends, consumer confidence, and management execution all affect a bank’s earning power. None of them appear in the formula.

Cross-checking DDM outputs against other methods helps. BOQ trades at a PE of approximately 15.2x at $6.25, compared with a sector average around 18x. That discount corroborates the DDM’s suggestion of modest undervaluation, but it also raises the question of whether the market is pricing in risks the model does not capture.

The PE ratio method for ASX banks uses cash earnings per share rather than statutory net profit as its input, a distinction that matters because provisioning decisions and one-off restructuring costs can move the statutory figure significantly without reflecting the underlying earnings power the DDM’s growth assumption depends on.

The model gives you a range, not an answer, and that is the point

The DDM’s apparent weakness, a wide output range, is its actual strength. It does not pretend to produce a precise price target. Instead, it offers a structured framework for making assumptions explicit and testing whether a stock is broadly cheap or expensive across a range of plausible futures.

The three BOQ estimates developed in this article illustrate the point:

Cash dividend average: ~$7.19 Forecast dividend average: ~$7.40 Gross dividend (franking included): ~$10.57

All three sit above the $6.25 reference price.

The appropriate weight given to the grossed-up estimate depends entirely on the investor’s tax position and ability to utilise franking credits. For a superannuation fund in accumulation phase, the $10.57 figure is relevant. For a foreign investor, it is not.

Averaging across scenarios is the practical discipline that reduces overconfidence. As new dividend data, earnings results, or RBA rate decisions arrive, the inputs should be updated and the model re-run. The DDM is a living framework, not a one-time calculation.

Qualitative work, including assessment of management execution, the macro environment, and competitive dynamics, must accompany the quantitative output before any investment decision.

What BOQ’s DDM valuation signals for income-focused investors

Across cash-dividend DDM scenarios, BOQ at approximately $6.25 appears modestly below the averaged fair value estimate of $7.19. When franking credits are incorporated for eligible investors, the implied upside widens further toward the $10.57 gross dividend estimate.

That margin of safety is only meaningful if the dividend is sustained. Forward earnings visibility is the variable that matters most from here.

Practical next steps for readers considering a DDM-informed view on BOQ:

• Check FY25 dividend guidance: the FY24 figure of 34 cents is the base used throughout this article. FY25 results and any updated guidance should supersede it.
• Calibrate the discount rate: review the current RBA cash rate and adjust the risk-free rate component accordingly.
• Verify personal franking credit eligibility: the gross dividend DDM estimate is only applicable for investors who can fully utilise franking credits.
• Cross-check with PE and price-to-book: a DDM output that conflicts with other valuation measures warrants further investigation, not blind acceptance.

The DDM does not tell investors what to buy. It tells them what they are assuming when they buy, and whether the price they pay leaves room for those assumptions to be wrong.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Past performance does not guarantee future results. Financial projections are subject to market conditions and various risk factors.