The study examined the effect of earnings quality on the book value of quoted consumer goods companies in Nigeria, emphasizing accrual quality, earnings persistence, predictability, and smoothness. Employing a quantitative research design, secondary data from financial statements were analyzed using regression models grounded in Signaling Theory. Findings reveal that accrual quality significantly impacts book value (β = 0.312, p < 0.05), while earnings predictability and persistence show weaker but positive correlations (β = 0.176, p = 0.08; β = 0.142, p = 0.10, respectively). Earnings smoothness exhibits a negative yet insignificant relationship (β = -0.097, p = 0.12). These results suggest that firms with higher accrual quality tend to have stronger book values, reinforcing the role of financial transparency in corporate valuation.