{
  "tool_id": "art-375-compute-fund-expense-ratios",
  "kernel_id": "art-375-compute-fund-expense-ratios",
  "display_name": "Compute Fund Expense Ratios",
  "tool_version": "1.0.0",
  "mandate_type": "attestation_mandate",
  "purpose": "Computes a fund's gross and net expense ratios and Total Expense Ratio (TER) from SUPPLIED gross expense components (flat amounts or accruals, using the identical accrual conventions as recompute_fund_nav/FN-1) and average net assets, applying any declared fee waivers/caps strictly in a DECLARED order using fixed-point BigInt money math throughout (no float accumulation). Waiver ordering is the substance: the order in which fixed-dollar caps, percent-of-remaining reimbursements, and rate caps apply changes the net expense ratio, so the order is a required declared input, never a house convention, and every waiver's running-balance effect is returned for audit. HARD FENCE: every expense component, average-net-assets figure, and waiver term is supplied and asserted, never fetched (zero-egress); this recomputes the arithmetic over declared inputs and attests THAT, never an opinion on expense accuracy and never a compliance determination. Third entry of the Funds/NAV family (nav-verification-pack) alongside recompute_fund_nav (FN-1) and test_nav_error_materiality (FN-2). 40-Act/UCITS citations informative only.",
  "control_description": "Computes a fund's gross and net expense ratios and Total Expense Ratio (TER) from SUPPLIED gross expense components (flat amounts or accruals, using the identical accrual conventions as recompute_fund_nav/FN-1) and average net assets, applying any declared fee waivers/caps strictly in a DECLARED order using fixed-point BigInt money math throughout (no float accumulation). Waiver ordering is the substance: the order in which fixed-dollar caps, percent-of-remaining reimbursements, and rate caps apply changes the net expense ratio, so the order is a required declared input, never a house convention, and every waiver's running-balance effect is returned for audit. HARD FENCE: every expense component, average-net-assets figure, and waiver term is supplied and asserted, never fetched (zero-egress); this recomputes the arithmetic over declared inputs and attests THAT, never an opinion on expense accuracy and never a compliance determination. Third entry of the Funds/NAV family (nav-verification-pack) alongside recompute_fund_nav (FN-1) and test_nav_error_materiality (FN-2). 40-Act/UCITS citations informative only.",
  "declared_inputs": [],
  "declared_outputs": [],
  "kernel_digest": "sha256:21e7330a4b9eb3f27ddcd9bbe5fb4dcf6e3143f9aa9c05faea150bb6c5a2c1c1",
  "trust_label": "independently verified -- zkVM execution proof (risc0/groth16-bn254)",
  "data_vintage": "2026-07-19",
  "last_validated": "2026-07-19",
  "conformance_fixtures_vendored": true,
  "compute_proof_ready": "ready",
  "wave": 51,
  "source_url": "https://ainumbers.co/chaingraph/art-375-compute-fund-expense-ratios.html",
  "generated_at": "2026-07-25T20:02:55.601Z"
}