Illustration of a man discussing coins and income purification with an adviser.

Portfolio Purification Calculation and Payment Evidence Checklist

October 30, 2026•3 min read

Portfolio purification needs a repeatable evidence trail. A calculation without holdings, dates, source documents and a recorded methodology is difficult to review or correct later. This checklist organises the work for an investor, adviser and qualified Shariah reviewer.

Educational information only: This is not a fatwa, tax opinion or investment recommendation. A qualified Shariah scholar should confirm the applicable methodology, and a registered tax practitioner should address tax treatment where necessary.

1. Approve the methodology first

Record the Shariah standard or reviewer guidance being applied, the portfolio scope and the calculation period. Do not mix methods across holdings without documenting why.

2. Freeze the holdings list

Export securities, funds, cash and corporate actions for the review period. Include identifiers, units, acquisition dates and disposal dates so the calculation population can be reproduced.

3. Define the review dates

State whether the exercise is transaction-based, distribution-based, annual or linked to a screening date. Record cut-off dates and how late statements will be handled.

4. Gather income evidence

Retain dividend advices, fund statements, cash-ledger entries and issuer notices. Reconcile gross amounts, withholding tax and the net amount received instead of working only from bank deposits.

5. Capture issuer or fund data

Record the financial figures, purification ratio or manager-provided amount used for each holding. Save the source, publication date and reporting period beside the value.

6. Check corporate actions

Review special dividends, capital distributions, mergers, spin-offs and return-of-capital events separately. Their labels and accounting treatment may differ from ordinary distributions.

7. Apply ownership periods consistently

Where the approved method considers ownership dates, document the number of units held and relevant dates. Explain assumptions for partial disposals, transfers and pooled accounts.

8. Reconcile currencies

Record source currency, payment currency, exchange-rate source and conversion date. Keep the unrounded result and the final rounded amount to support later review.

9. Show every calculation

For each line, retain the input amount, approved percentage or rule, formula and result. Totals should link back to the underlying statements without manual gaps.

10. Separate purification from tax

Keep the Shariah calculation distinct from tax deductions, charitable rebates or accounting classifications. Ask a tax practitioner how any payment should be treated in a return.

11. Record the payment decision

Document the amount approved, approval date, decision maker and intended payment route. If amounts are aggregated, preserve the link to each underlying holding.

12. Retain payment evidence

Keep proof of payment, recipient details, date, reference and any acknowledgement. Protect beneficiary privacy and avoid describing the payment in a way that promises a tax result.

13. Handle uncertainties

Put missing data, disputed figures and unclear events into an exceptions register. Assign an owner and review date; do not silently substitute an estimate for verified evidence.

14. Correct prior periods transparently

When better data arrives, preserve the original calculation, correction and reason. Record any additional payment rather than overwriting the audit trail.

15. Close the annual file

  • Approved method and reviewer

  • Holdings and distribution reconciliations

  • Source documents and calculations

  • Decision and payment evidence

  • Exceptions, corrections and next review date

Useful official starting points include FSCA regulated-entity information, SARS personal income tax guidance and the International Islamic Fiqh Academy. These sources provide regulatory or scholarly context; the applicable method still needs qualified review.

The completed file should allow another reviewer to reproduce the amount, trace it to source evidence and see when and how payment was made.

Mogamat Ali Salie

Mogamat Ali Salie

With a strong foundation in Information Technology and an M.C.S.E. certification, my journey took an unexpected turn after winning a free trip on a South African TV game show that brought me to the USA. During the dot-com bubble in 2001, I shifted my college major to Finance while working as a Junior Network Administrator — and discovered my true passion: helping people grow and protect their wealth. I began my banking career with Comerica Bank in Michigan while completing my Bachelor’s degree in Finance, then moved to Los Angeles to join Wells Fargo Bank. There, I quickly advanced through multiple roles, participated in extensive Fortune 500 training, and developed a diverse skill set in wealth management, client relations, and financial strategy. After 11 years abroad, I returned to South Africa to be closer to family, working as a Financial Adviser with Old Mutual, then Liberty Life, before being headhunted by Absa Wealth / Barclays Wealth in 2013. Since 2018, I’ve been with FNB Wealth & Investment, focusing on Ultra High Net Worth (UHNW) clients, helping them navigate complex financial and investment landscapes. 🌍 My competitive advantage comes from deeply profiling clients, understanding their goals, and leveraging international experience across the USA, UK, and South Africa. This perspective allows me to provide insight into offshore investment opportunities, global regulatory environments, and bespoke solutions that align with clients’ values and objectives. 💡 Building on this journey, as the Founder of MuslimFin Family Office — a hybrid model combining a Virtual Family Office (VFO) with a Boutique Family Office. We provide families and entrepreneurs with Islamic values-driven wealth stewardship, tailored advice, and innovative solutions that honour faith, legacy and growth. 🏃‍♂️ Beyond finance, I am passionate about running and endurance challenges. I proudly completed the Comrades Down Run in 2023 and the Comrades Up Run in 2024. As a member of the running, cycling and swimming fraternity, I'm also fortunate to be part of and participate in community initiatives and charitable causes, because true success is measured not just by what we achieve, but by how we give back.

LinkedIn logo icon
Youtube logo icon
Instagram logo icon
Back to Blog