{"id":"F2019L00818","name":"Family Law (Superannuation) (Interest Rate for Adjustment Period) Determination 2019","slug":"family-law-superannuation-interest-rate-for-adjustment-period-determination-2019","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":440130,"registerId":"F2019L00818-fast-fetch-1775955883073","compilationNumber":null,"startDate":"2026-04-12","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Family Law (Superannuation) (Interest Rate for Adjustment Period) Determination 2019","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\n    ![Commonwealth Coat of Arms](image.001.png)\n\n \n\n \n\nFamily Law (Superannuation) (Interest Rate for Adjustment Period) Determination 2019\n\nI, Guy Francis Thorburn, Australian Government Actuary, make the following determination under regulation 45D of the Family Law (Superannuation) Regulations 2001.\n\nDated:  1 June 2019\n\n \n\n![H:\\AGA\\General Administration\\Signatures\\GTSignature.jpg](image.002.jpeg)\n\nGuy Francis Thorburn\n\nAustralian Government Actuary\n\n \n\n \n\n   \n\nContents\n\n1 Name of determination\n\n2 Commencement\n\n3 Authority\n\n4 Definition\n\n5 Adjustment period—financial year\n\n6 Adjustment period—less than 12 months within financial year\n\n7 Adjustment period—12 months not within financial year\n\n8 Adjustment period—less than 12 months not within financial year\n\n \n\n1  Name of determination\n\n  This determination is the Family Law (Superannuation) (Interest Rate for Adjustment Period) Determination 2019.\n\n2  Commencement\n\n  This determination commences on 1 July 2019.\n\n3  Authority\n\n  This determination is made under regulation 45D of the Family Law (Superannuation) Regulations 2001.\n\n4  Definition\n\n  In this determination:\n\nregulations means the Family Law (Superannuation) Regulations 2001.\n\n5  Adjustment period—financial year\n\n  For subregulation 45D(3) of the regulations, the interest rate for the adjustment period, being the financial year beginning on 1 July 2019, is 0.048.\n\n6  Adjustment period—less than 12 months within financial year\n\n (1) This section applies to an adjustment period of less than 12 months that begins and ends in the financial year beginning on 1 July 2019.\n\n (2) For subregulation 45D(4) of the regulations, the method for working out the interest rate for the adjustment period is by using the formula:\n\n![](image.003.png)\n\nwhere:\n\nd is the number of days in the adjustment period.\n\n7  Adjustment period—12 months not within financial year\n\n (1) This section applies to an adjustment period of 12 months that begins in the financial year beginning on 1 July 2018 and ends in the financial year beginning on 1 July 2019.\n\n (2) For subregulation 45D(6) of the regulations, the method for working out the interest rate for the adjustment period is by using the formula:\n\n![](image.004.png)\n\n  \n\n  where:\n\nd1 is the number of days in the adjustment period in the financial year beginning on 1 July 2018.\n\nd2 is the number of days in the adjustment period in the financial year beginning on 1 July 2019.\n\n8  Adjustment period—less than 12 months not within financial year\n\n (1) This section applies to an adjustment period of less than 12 months that begins in the financial year beginning on 1 July 2018 and ends in the financial year beginning on 1 July 2019.\n\n (2) For subregulation 45D(6) of the regulations, the method for working out the interest rate for the adjustment period is by using the formula:\n\n![](image.005.png)\n\n  where:\n\nd1 is the number of days in the adjustment period in the financial year beginning on 1 July 2018.\n\nd2 is the number of days in the adjustment period in the financial year beginning on 1 July 2019.\n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is an annual technical determination that performs exactly the function intended by regulation 45D of the Family Law (Superannuation) Regulations 2001. It sets the interest rate for the adjustment period and provides calculation methods for edge cases. The scope remains tightly constrained to this specific administrative function."},"complexity_factors":["Only 8 short sections with minimal text","Single defined term ('regulations')","Four straightforward mathematical formulas for different timing scenarios","No nested exceptions or conditional logic beyond the four mutually exclusive scenarios","Heavy reliance on external context (Family Law (Superannuation) Regulations 2001) to understand purpose, but the instrument itself is self-contained","Formulas involve basic arithmetic (weighted averages by days) but require understanding of the underlying superannuation splitting framework"],"plain_english_summary":"This instrument sets the interest rate used to adjust superannuation splits between separating couples for timing differences in the 2019–20 year, fixing the rate at 4.8%. It affects separating couples, super funds calculating payments, and family law practitioners because the rate determines how much the recipient (or payer) gains or loses while funds await transfer."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"This determination does not change who is covered by the Family Law (Superannuation) Regulations. It specifies the interest rate and the mathematical methods for calculating that rate across full, partial and cross‑financial‑year adjustment periods for the relevant year (see sections 5–8) under the authority of regulation 45D (section 3)."},"complexity_factors":["Single numeric parameter set for the financial year (interest rate 0.048) — section 5.","Pro‑rata day‑count formulas for adjustment periods shorter than 12 months — section 6(2).","Cross‑year prorating for 12‑month periods spanning two financial years, requiring d1 and d2 calculations — section 7(2).","Pro‑rata formula for less‑than‑12‑month periods spanning two financial years, requiring d1 and d2 calculations — section 8(2).","Instrument is technical and administrative (formula application) rather than substantive law change; linkage to regulation 45D — sections 3 and 5.","Compliance burden limited to arithmetic/date counting and applying prescribed formulas (sections 6–8); low discretion once rate/formula set."],"plain_english_summary":"This determination (commencing 1 July 2019) sets the interest rate used under regulation 45D for calculating superannuation adjustment amounts in family law splits: 0.048 (4.8%) for the 2019–20 financial year, and mathematical formulas for partial or cross‑year adjustment periods. It affects separating couples, courts, superannuation providers and advisers because it fixes the rate and day‑count methods used to compute sums owing during adjustment periods."}},"importantCases":[],"_links":{"self":"/api/acts/family-law-superannuation-interest-rate-for-adjustment-period-determination-2019","history":"/api/acts/family-law-superannuation-interest-rate-for-adjustment-period-determination-2019/history","analysis":"/api/acts/family-law-superannuation-interest-rate-for-adjustment-period-determination-2019/analysis","conflicts":"/api/acts/family-law-superannuation-interest-rate-for-adjustment-period-determination-2019/conflicts","importantCases":"/api/acts/family-law-superannuation-interest-rate-for-adjustment-period-determination-2019/important-cases","documents":"/api/acts/family-law-superannuation-interest-rate-for-adjustment-period-determination-2019/documents"}}