Grow your RSA faster and cut your tax with AVC.
Future value of contributions
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Annual tax saved
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Monthly voluntary
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Two jobs from one extra deduction
An additional voluntary contribution, or AVC, is money you choose to send to your Retirement Savings Account on top of the mandatory 8 percent employee pension. It does two useful things at once, and this calculator measures both. First, it grows your retirement pot, since the extra is invested and compounds for decades. Second, voluntary contributions are a deductible relief, so they shave your chargeable income and cut the tax you pay this year. Most pension tools show only the pot. The point of this one is to put the long-run growth and the immediate tax saving side by side, so you can judge the AVC on its full value rather than half of it.
The mandatory side stays in the background. The tool assumes the standard 8 percent employee contribution is already coming out of your emolument, where emolument means basic pay plus housing and transport allowances, and the AVC is whatever percentage you add on top. The pension framework sits under the National Pension Commission, PenCom, and the tax relief on contributions runs through the personal income tax rules administered by your State Internal Revenue Service. Both the contribution rates and the relief treatment are areas the current reform touches, so confirm the figures with PenCom and your state revenue service.
Adding 5 percent on a NGN 400,000 salary
Take the default scenario: a monthly emolument of NGN 400,000, an extra 5 percent voluntary contribution, a 12 percent annual return, and a 20-year horizon. The mandatory 8 percent is NGN 32,000 a month and the 5 percent AVC adds NGN 20,000, so NGN 52,000 a month flows into the account. Compounded monthly at 12 percent for 20 years, that stream grows to about NGN 51.44 million, of which roughly NGN 12.48 million is your own contributions and the rest is investment growth. On the tax side, using the bands this calculator applies, the AVC lifts your annual reliefs and trims your income tax by NGN 43,200 a year, because at this salary the extra NGN 240,000 of yearly contribution comes off income that would otherwise be taxed at 18 percent.
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The curve shows the account rising over the 20 years, with the lower shaded area being your contributions and the gap above it the compounding growth.
How the tax relief is worked out
The tax saving is not a flat rebate; it depends on your band. The calculator computes your income tax with only the mandatory pension deducted, then again with the mandatory plus voluntary deducted, and the difference is the saving. Because deductions come off the top of your income, the relief is valued at your marginal rate. At a NGN 400,000 monthly emolument, that top slice is in the 18 percent layer, so each naira of AVC saves about 18 kobo of tax. A higher earner reaching into the 21 or 23 percent bands would save more per naira; someone in the 0 or 15 percent zone would save less. The tool uses your emolument as the income base, so it does not model other income or reliefs. Treat the saving as indicative and check your full position with your State Internal Revenue Service.
The lock-up most people overlook
The catch with voluntary contributions is liquidity. The mandatory pension is locked until retirement, and while voluntary money has historically been more accessible, withdrawing it early can trigger tax, which undoes part of the relief you claimed going in. The rules on how long voluntary funds must stay invested before a tax-free withdrawal are set by PenCom and have changed over time. Read this tool as a long-horizon projection: the NGN 51.44 million figure assumes you leave the money to compound for the full term. A practical tip is to size your AVC to money you genuinely will not need, so the lock-up is a feature rather than a trap, and confirm the current withdrawal rules with PenCom before committing a large monthly amount.
Is there a cap on how much I can contribute voluntarily?
The slider in this tool runs up to 50 percent of emolument, which is generous for modelling, but the relief that actually reduces your tax is governed by the pension and personal income tax rules, and very large contributions can attract conditions. The growth side of the calculation works at any level you enter, while the tax saving is only as real as the relief the rules allow. Confirm the current contribution and relief limits with PenCom and your State Internal Revenue Service.
Does the 12 percent return reflect what RSA funds actually earn?
It is an assumption you control, not a promise. RSA funds are invested across different portfolios with different risk and return profiles, and real returns vary year to year and against inflation. Twelve percent is a reasonable illustrative figure for a long projection, but drop it to a more cautious number to see how sensitive the pot is, since over 20 years a couple of percentage points changes the future value substantially.