Franchise opportunities compared

    Rusty Taco vs Sonic Drive-In

    Reviewed figures from each brand's Franchise Disclosure Document (FDD), side by side. Each figure carries its FDD year and page. This is not a ranking or recommendation, and the two FDDs may cover different years and location groups.

    Initial investment · Item 7

    Rusty Taco

    $529,400 – $1,129,950

    2026 FDD · Item 7

    Sonic Drive-In

    $1,485,200

    2026 FDD · Item 7 · PDF p. 38

    Initial franchise fee · Item 5

    Rusty Taco

    $30,000

    2026 FDD · Item 5 · PDF p. 11

    Sonic Drive-In

    Not available

    Royalty · Item 6

    Rusty Taco

    5%

    2026 FDD · Item 6 · PDF p. 12

    Sonic Drive-In

    1%

    2026 FDD · Item 6 · PDF p. 34

    Before you compare

    • Both sets of figures come from 2026 FDDs.
    • Rusty Taco discloses more than one business format, so the investment range spans formats; the full report breaks them out.
    • Item 19 figures cover the location groups each FDD names (Rusty Taco: 5, Sonic Drive-In: 8). Different groups are not directly comparable.

    Financial commitment

    Estimated initial investment (Item 7)

    Rusty Taco

    $529,400 – $1,129,950
    2026 FDD · Item 7

    Sonic Drive-In

    $1,485,200
    TOTAL ESTIMATED INITIAL INVESTMENT (excluding free- standing real estate costs) (15) — 1485200
    2026 FDD · Item 7 · PDF p. 38
    Standard initial franchise fee (Item 5)

    Rusty Taco

    $30,000
    2026 FDD · Item 5 · PDF p. 11

    Sonic Drive-In

    Not available
    No single standard fee identified
    Royalty (Item 6)

    Rusty Taco

    5%
    Royalty rate
    2026 FDD · Item 6 · PDF p. 12

    Sonic Drive-In

    1%
    lows: Duration of Effective Royalty Fee Effective Royalty Fee Opening through Year 1 — 1%
    2026 FDD · Item 6 · PDF p. 34
    Brand / advertising fund (Item 6)

    Rusty Taco

    2%
    Brand Fund contribution — 2%
    2026 FDD · Item 6 · PDF p. 12

    Sonic Drive-In

    Not available
    No reviewed brand or advertising fund fee

    System scale & health

    Total outlets (Item 20)

    Rusty Taco

    Not available
    No reviewed outlet counts

    Sonic Drive-In

    3,412
    Outlets at end of 2025
    2026 FDD · Item 20 · PDF p. 74
    Net outlet change (Item 20)

    Rusty Taco

    Not available
    Only one year reported

    Sonic Drive-In

    −109
    Calculated: 3,521 at end of 2023 → 3,412 at end of 2025
    Outlet exits (Item 20)

    Rusty Taco

    Not available
    No complete exit records for a year

    Sonic Drive-In

    Not available
    No complete exit records for a year
    Franchising since (Item 1)

    Rusty Taco

    2011
    From a verified franchisor listing

    Sonic Drive-In

    Not available
    Not in reviewed records
    Franchisor founded (Item 1)

    Rusty Taco

    Not available
    Not in reviewed records

    Sonic Drive-In

    Not available
    Not in reviewed records

    Financial performance (Item 19), by location group

    Rusty Taco
    Franchised (23 locations) — other measures
    $1,840,716
    other Total Data Set
    2026 FDD · Item 19 · PDF p. 44
    Franchised (8 locations) — other measures — Top Third of traditional franchised Rusty Taco restaurants in the 2025 data set
    4 units
    other Top Third
    2026 FDD · Item 19 · PDF p. 44
    Franchised (8 locations) — other measures — Bottom Third of traditional franchised Rusty Taco restaurants in the 2025 data…
    50 percent
    other Bottom Third
    2026 FDD · Item 19 · PDF p. 44
    +2 more groups in the full report
    SDSonic Drive-In
    Locations counted not stated in the reviewed record — 2nd Quartile
    47 percent
    other 2nd Quartile
    2026 FDD · Item 19 · PDF p. 71
    Locations counted not stated in the reviewed record — All Restaurants
    1,338 restaurants
    other All Restaurants
    2026 FDD · Item 19 · PDF p. 72
    Locations counted not stated in the reviewed record — 1st Quartile
    294 restaurants
    other 1st Quartile
    2026 FDD · Item 19 · PDF p. 71
    +5 more groups in the full report

    Item 19 groups are shown separately and never combined. Revenue or sales figures are not profit. Net outlet change and turnover are Franopolis calculations from the disclosed counts; turnover is a count-based rate, not a measure of owner earnings.

    Rusty Taco vs Sonic Drive-In: common questions

    Which costs less to open, Rusty Taco or Sonic Drive-In?
    Rusty Taco: $529,400 – $1,129,950 (2026 FDD · Item 7); Sonic Drive-In: $1,485,200 (2026 FDD · Item 7 · PDF p. 38). These are each franchisor's Item 7 estimated initial investment. The low end of the disclosed estimate is lower for Rusty Taco. At least one range spans several business formats. Estimates are not quotes, and the FDD years may differ.
    How do Rusty Taco and Sonic Drive-In royalties compare?
    Rusty Taco: 5% (2026 FDD · Item 6 · PDF p. 12); Sonic Drive-In: 1% (2026 FDD · Item 6 · PDF p. 34). Royalties as disclosed in Item 6; other recurring fees are listed separately.
    Do Rusty Taco and Sonic Drive-In disclose financial performance (Item 19)?
    Rusty Taco has reviewed Item 19 figures for 5 location groups; Sonic Drive-In has reviewed Item 19 figures for 8 location groups. Different location groups are not directly comparable, and revenue is not profit.

    Answers restate the reviewed figures above. Not a ranking or recommendation.

    How Franopolis reviews FDD figures

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