Understanding SOFR in Zimbabwean Tax Legislation.

Overview.

In global financial markets, benchmark interest rates serve as the foundational reference points for pricing trillions of dollars in loans, derivatives, bonds, and corporate debt contracts.

For decades, the London Interbank Offered Rate (LIBOR) was the primary international benchmark. However, following structural market shifts, concerns regarding manipulation, and broader financial benchmark reforms, international regulatory bodies mandated the complete phase-out of USD LIBOR.

To replace LIBOR, the Federal Reserve Bank of New York introduced the Secured Overnight Financing Rate (SOFR). SOFR measures the cost of borrowing cash overnight collateralized by U.S. Treasury securities. Because it is backed by actual, transparent transaction volumes in the massive U.S. Treasury repurchase (repo) market, SOFR is widely regarded as a far more resilient, risk-free, and objective benchmark than LIBOR.

Recognising these global shifts, the Parliament of Zimbabwe formally amended the Income Tax Act [Chapter 23:06] via national Finance Legislation to substitute references to “LIBOR” with “SOFR.” This statutory update ensures that local tax provisions governing foreign currency (USD) transactions reflect current global monetary standards.

Where SOFR Applies in Zimbabwean Law

Under the Income Tax Act [Chapter 23:06], SOFR serves as a statutory benchmark across two major pillars of tax compliance: Employment Fringe Benefits and Transfer Pricing / Related-Party Financing.

Section 8(1)(f)(II)(h): Employment Low-Interest Foreign Currency Loans

Under Section 8(1)(f) of the Income Tax Act, any loan or advance granted by an employer to an employee at an interest rate below the statutory benchmark rate gives rise to a taxable fringe benefit (commonly known as a “deemed benefit”).

• The Rule for Foreign Currency (USD): The minimum statutory benchmark rate for foreign currency employee loans is set at SOFR + 5% per annum.
• Tax Effect: If an employer provides a USD loan to an employee at an interest rate lower than $\text{SOFR} + 5\%$, the shortfall constitutes taxable employment income. The employer must calculate this benefit monthly and remit the corresponding Pay-As-You-Earn (PAYE) tax to the Zimbabwe Revenue Authority (ZIMRA).

Detailed Practical Example:

Assume an employer grants a USD $20,000$ personal loan to an executive at a favorable interest rate of $3\%$ per annum.

• Assume the prevailing SOFR rate on the date of calculation is $5.3\%$.
• Statutory Benchmark Rate: $5.3\% + 5.0\% = 10.3\%$ per annum.
• Interest Rate Shortfall: $10.3\% – 3.0\% = 7.3\%$ per annum.
• Annual Taxable Benefit: $7.3\% \times \$20,000 = \$1,460$.
• Monthly Taxable Benefit: $\$1,460 / 12 = \$121.67$.

This $\$121.67$ must be added to the employee’s gross taxable earnings each month and subjected to standard PAYE bracket rates.

Section 97B(2) & The Thirty-Fifth Schedule: Transfer Pricing and Arm’s Length Interest Rates

Section 97B of the Income Tax Act enforces transfer pricing regulations to ensure that transactions between associated enterprises (e.g., local subsidiaries borrowing from foreign parent entities or cross-border group affiliates) are conducted at arm’s length.

• Intercompany Debt Evaluation: When a Zimbabwean company incurs interest expenses on foreign-currency-denominated loans from a related entity abroad, ZIMRA evaluates whether the agreed interest rate aligns with market conditions.
• SOFR as the Baseline: ZIMRA references prevailing SOFR rates, combined with appropriate commercial risk margins, to determine whether the cross-border interest rate is defensive under transfer pricing rules.
• Tax Exposure: If a local company pays interest to a related party at an exorbitant rate significantly above market benchmarks based on SOFR, ZIMRA has the statutory authority to:
  1. Disallow the excess interest expense for Corporate Income Tax (CIT) deduction purposes.
  2. Reclassify the excessive interest payment as a deemed dividend distribution, thereby triggering additional Non-Resident Shareholders’ Tax (NRST) obligations.

Practical Steps and Operational Impacts for Businesses

To maintain full compliance with ZIMRA regulations, corporate finance teams, legal departments, and HR professionals must integrate SOFR into their operating procedures:

+-----------------------------------------------------------------------------------+
|                            SOFR COMPLIANCE CHECKLIST                              |
+-----------------------------------------------------------------------------------+
|  [ ] Update Payroll Systems to benchmark USD employee loans against (SOFR + 5%).   |
|  [ ] Amend Legacy Contracts replacing "LIBOR" references with "SOFR".             |
|  [ ] Adopt a Consistent Sampling Methodology (e.g., monthly SOFR averages).       |
|  [ ] Prepare Transfer Pricing Documentation benchmarking intercompany USD loans.  |
+-----------------------------------------------------------------------------------+

Modernise Payroll and Human Resources Systems

Payroll software must be updated to calculate fringe benefit values based on dynamic SOFR figures rather than deprecated LIBOR rates or static assumptions. Employers must verify whether their payroll vendors have updated the backend lookup tables to reflect SOFR plus the $5\%$ statutory margin.

Amend Existing Foreign Currency Loan Agreements

Existing employment contracts, staff loan schemes, and mortgage assistance agreements drafted prior to the legislative phase-out often explicitly name LIBOR. These agreements should be formally amended using standard fallback clauses to specify SOFR, preventing contractual ambiguity and alignment issues during tax audits.

Establish a Documented Reference Rate Policy

Because SOFR is an overnight rate that shifts daily according to international financial markets, businesses should establish a clear corporate tax policy detailing how reference rates are selected. Common compliance methodologies include:

• Using the 30-day Average SOFR published by the Federal Reserve Bank of New York at the beginning of each calendar month.
• Using the Daily Term SOFR rate on the specific date a loan or advance is issued.

Whichever method is chosen, it must be applied consistently across all tax accounting periods.

Maintain Robust Transfer Pricing (TP) Documentation

Under Section 97B, the burden of proof rests on the taxpayer. When structuring cross-border shareholder loans or group credit facilities, local businesses must retain detailed benchmarking studies showing that the markup over SOFR reflects creditworthiness, market conditions, and comparable uncontrolled transactions.

SOFR vs. LIBOR

Understanding the functional differences between SOFR and LIBOR helps explain why legislative frameworks adopted this transition:

Metric / Feature	Legacy Reference (LIBOR)	Current Statutory Reference (SOFR)
Market Foundation	Based on panel bank quotes/estimates.	Based on actual transaction data.
Collateralization	Unsecured interbank lending.	Fully secured by U.S. Treasury securities.
Credit Risk Premium	Includes inherent bank credit risk.	Near-zero credit risk (risk-free rate).
Regulatory Oversight	Managed by the ICE Benchmark Administration (discontinued).	Administered by the Federal Reserve Bank of New York.
Zimbabwe Tax Context	Deprecated reference in local statutes.	Primary legal benchmark for USD tax calculations.

Key Takeaways

1. Definition: SOFR (Secured Overnight Financing Rate) is the official benchmark replacing LIBOR across international finance and Zimbabwean tax statutes.
2. Employment Benefits: USD staff loans granted below SOFR + 5% incur taxable fringe benefit tax under Section 8(1)(f)(II)(h).
3. Cross-Border Financing: SOFR provides the foundation for benchmarking arm’s length intercompany loan rates under Section 97B Transfer Pricing rules.
4. Action Required: Businesses must audit payroll settings, update legacy loan contracts, and maintain clear records of SOFR rates used for monthly PAYE and annual Corporate Income Tax filings.

Disclaimer: This guide is prepared for informational purposes. Businesses operating in Zimbabwe should consult a registered tax consultant .