DiffMasjien — Grainvest

Overview

Pick a reference set. Everything is current-season and sourced from the JSE and the co-ops themselves.

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JSE Differentials

Location differentials by delivery point — maize, wheat, sunflower, soybeans.

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Co-op Costs

Handling and storage tariffs: Senwes, VKB, AFGRI, NWK, OVK, TWK.

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Grading Regulations

Permissible deviations by grade, straight from the gazette.

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Levies & Discounts

SACTA and SAWCIA levies, plus wheat grade discounts.

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Carry Calculator

Work out full carry and what percentage of carry the market is paying.

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JSE Margin Calculator

The official JSE tool, in a new tab.

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Talk to Grainvest

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Talk to Grainvest

Physical grain trading, backed by more than 20 years in the market.

Potchefstroom

80 Thabo Mbeki Way
Potchefstroom, 2520

☏ 018 297 2559 ✉ potchadmin@gvf.co.za

Grainvest Potchefstroom

Wiek Booysen Kobus Theron Devilliers Kroon Fourie van der Linde

Pretoria

Stone House, 510 Makou Street
Monument Park Ext. 2, 0181

☏ 012 482 6600 ✉ ptaadmin@gvf.co.za

Grainvest Physicals

CJ de Villiers Hanu Lategan Jannes Olivier Jaco van der Westhuizen

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grainvest.co.za

Trading · Livestock · Industrial · Dalevest App

JSE Differentials

Location differentials by delivery point, 2026/2027 season.

📊 Silo Differentials — 2026/2027

Source updated 23 Apr 2026 · valid 1 May 2026 – 30 Apr 2027.

Silo	R/ton	Owner

📄 Official JSE Documents

📅 Season notes:
🌽 Maize: 1 May 2026 – 30 April 2027
🌻 Sunflower & Soybeans: 1 March 2026 – 28 February 2027
🌾 Wheat: 1 October 2026 – 30 September 2027

📥

Delivery Points & Differentials 2026-2027 Current Season

Excel file • JSE.co.za

🌐

JSE Physical Delivery Page

All documents and updates

Co-op Costs

Handling and storage tariffs across the six major co-operatives.

🌾 Senwes Grainlink — 2026/27 Tariffs

📅 Season: 1 May 2026 – 30 April 2027. Rates excl. VAT. Two handling rate tiers apply depending on silo.

Cost Type	Excl. VAT	Incl. VAT
Handling (R/t) — highest	R77.85	R89.53
Handling (R/t) — lowest	R66.17	R76.10
Daily storage (R/t/day)	R1.31	R1.51
Season tariff (R/t) — highest	R171.61	R197.35
Season tariff (R/t) — lowest	R162.44	R186.81
Storage ceiling — highest	131 days
Storage ceiling — lowest	124 days
Silo certificate fee	R5.42/t	R6.23/t
Stock transfer fee	R8.74/t	R10.05/t
After-hours outloading	R22.14/t	R25.46/t

Lower rate (R66.17) at: Amalia, Bamboesspruit, Bloemhof, Christiana, Hallatshope, Helpman Bunker, Hertzogville, Hoopstad, Kameel, Kingswood, Leeudoringstad, Makwassie, Migdol, Misgunst Depot, Poppieland Depot, Schweizer-Reneke.

Cost Type	Excl. VAT	Incl. VAT
Handling (R/t)	R86.73	R99.74
Daily storage (R/t/day)	R1.30	R1.50
Season tariff (R/t)	R174.20	R200.33
Storage ceiling	134 days
Silo certificate fee	R5.42/t	R6.23/t

Cost Type	Excl. VAT	Incl. VAT
Handling (R/t)	R78.95	R90.79
Daily storage (R/t/day)	R1.49	R1.71
Season tariff (R/t)	R157.94	R181.63
Storage ceiling	106 days
Carry-over stock (1 Oct 2025)	R1.49/t/day	R1.71/t/day

Cost Type	Cat A (excl.)	Cat A (incl.)	Cat B (excl.)	Cat B (incl.)
Handling (R/t)	R144.77	R166.49	R99.59	R114.53
Daily storage (R/t/day)	R2.50	R2.88	R2.43	R2.79
Season tariff (R/t)	R307.50	R353.63	R294.03	R338.13
Storage ceiling	123 days	121 days
After-hours outloading	R40.93/t excl. \| R47.07/t incl.

Cost Type	Cat A (excl.)	Cat A (incl.)	Cat B (excl.)	Cat B (incl.)
Handling (R/t)	R82.00	R94.30	R73.24	R84.23
Daily storage (R/t/day)	R1.49	R1.71	R1.36	R1.56
Season tariff (R/t)	R201.15	R231.32	R168.64	R193.94
Storage ceiling	135 days	124 days

Service	Excl. VAT	Incl. VAT
Weighing (per tonne)	R6.98/t	R8.03/t
Weighing minimum per load	R90.46	R104.03
Bagging (excl. bags)	R182.90/t	R210.34/t
Instruction change fee	R6.24/t (min R118.77)	R7.18/t (min R136.59)
Grain transfer/consolidation	R8.74/t (min R153.30)	R10.05/t (min R176.30)
Certificate conversion / issue	R5.42/t (min R118.77)	R6.23/t (min R136.59)
After-hours outloading (maize/sorghum)	R22.14/t	R25.46/t
After-hours outloading (sunflower)	R44.27/t	R50.91/t
Generator outloading surcharge	R17.95/t	—

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Senwes Grain Storage Agreement & Tariffs

senwes.co.za

Cost Type	Rate (R/ton)
Handling (R/t)	R68.00
Daily storage (R/t/day)	R1.18
Ceiling tariff (R/t)	R175.00
Season tariff (R/t)	R159.00

Cost Type	Rate (R/ton)
Handling (R/t)	R68.00
Daily storage (R/t/day)	R1.18
Ceiling tariff (R/t)	R175.00
Season tariff (R/t)	R159.00

Cost Type	Rate (R/ton)
Handling (R/t)	R72.00
Daily storage (R/t/day)	R1.46
Ceiling tariff (R/t)	R187.00
Season tariff (R/t)	R175.00

Cost Type	Rate (R/ton)
Handling — all silos excl. Jim Fouché	R129.00
Handling — Jim Fouché silo	R129.00
Daily storage (R/t/day)	R2.33
Ceiling tariff (R/t)	R326.00
Season tariff (R/t)	R307.00

Cost Type	Rate (R/ton)
Handling — all silos excl. Jim Fouché	R77.00
Handling — Jim Fouché silo	R167.00
Daily storage (R/t/day)	R1.23
Ceiling tariff (R/t)	R176.00
Season tariff (R/t)	R148.00

🌾 AFGRI Grain Storage — 2026/27 Tariffs

No intake fee on first deliveries. Rates excl. VAT. Certificate: R4.79/t. Throughput: R39.23/t. Daily rate capped at 150 days.
📅 Maize/Sorghum: 1 May 2026 – 30 April 2027 | Sunflower/Soybeans: 1 March 2026 – 28 February 2027 | Wheat/Barley: 1 Oct 2025 – 30 Sep 2026
Wheat: no handling-in cost — handling out only. Wheat certificate/stock transfer: R4.58/t.

North West silos

Cost Type	Maize	Sorghum	Wheat	Soybeans	Sunflower
Handling Out (R/t)	R76.47	R76.47	R64.87	R86.05	R143.42
Storage Daily (R/t/day)	R1.18	R1.18	R1.38	R1.25	R2.27
Fixed Storage (R/t)	R124.90	R124.90	R153.92	R129.06	R218.63

Cost Type	Maize	Sorghum	Wheat	Soybeans	Sunflower
Handling Out (R/t)	R69.66	R69.66	R79.55	R138.93
Storage Daily (R/t/day)	R1.18	R1.18	R1.25	R2.27
Fixed Storage (R/t)	R166.43	R166.43	R171.67	R209.28

Cost Type	Maize	Sorghum	Wheat	Soybeans	Sunflower
Handling Out (R/t)	R66.28	R66.28	R64.87	R80.13	R139.46
Storage Daily (R/t/day)	R1.18	R1.18	R1.38	R1.25	R2.27
Fixed Storage (R/t)	R166.43	R166.43	R153.92	R171.67	R209.28

Cost Type	Maize	Sorghum	Wheat	Soybeans	Sunflower
Handling Out (R/t)	R69.66	R69.66	R64.87	R79.55	R138.93
Storage Daily (R/t/day)	R1.18	R1.18	R1.38	R1.25	R2.27
Fixed Storage (R/t)	R154.88	R154.88	R131.57	R170.37	R298.26

Cost Type	Maize	Sorghum	Wheat	Soybeans	Sunflower
Handling Out (R/t)	R38.28	R66.02	R46.89	R79.55	R138.93
Storage Daily (R/t/day)	R1.18	R1.18	R1.21	R1.25	R2.27
Fixed Storage (R/t)	R166.43	R166.43	R110.10	R171.67	R209.28

Cost Type	Wheat
Handling Out (R/t)	R55.00
Storage Daily (R/t/day)	R1.32
Fixed Storage (R/t)	R146.86

Silo	Period	Maize	Sorghum	Soybeans	Sunflower
Beestekraal	Handling Out	R76.47	R76.47	R86.05	R143.42
Period (4 months)	R60.93	R60.93	R62.95	R106.64
Slabberts	Handling Out	R69.66	R69.66	R79.55	R138.93
Period (8 months)	R133.14	R133.14	R137.33	R167.43

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AFGRI Grain Management & Storage Agreements

afgri.co.za

🌾 NWK Grain Storage — 2026/27 Tariffs

📅 Season: 1 May 2026 – 30 April 2027. Rates excl. VAT. Tiered daily rates by season period.

Cost Type	Rate (R/ton)
Handling (R/t)	R75.00
Daily storage — May to Aug	R1.29
Daily storage — Sep to Dec	R1.46
Daily storage — Jan to Apr	R1.58
Storage ceiling	140 days
Year storage — 0 to 74 999 ton	R166.00
Year storage — 75 000 to 149 999 ton	R158.00
Year storage — 150 000 to 249 999 ton	R152.00
Year storage — 250 000 ton+	R148.00

Cost Type	Rate (R/ton)
Handling (R/t)	R76.00
Daily storage (R/t/day)	R1.52
Storage ceiling	120 days
Year/Season storage (R/t)	R176.00

Cost Type	Rate (R/ton)
Handling (R/t)	R135.00
Daily storage — NWK excl. Lottiehalte	R2.55
Daily storage — Lottiehalte (0–29 999 ton)	R2.55
Daily storage — Lottiehalte (30 000 ton+)	R2.45
Storage ceiling	120 days
Year storage — NWK excl. Lottiehalte	R300.00
Year storage — Lottiehalte (0–29 999 ton)	R300.00
Year storage — Lottiehalte (30 000 ton+)	R266.00

Cost Type	Rate (R/ton)
Handling (R/t)	R83.00
Daily storage (R/t/day)	R1.41
Storage ceiling	140 days
Year/Season storage (R/t)	R171.00

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NWK Silo Tariffs & Storage Agreements

online.nwk.co.za

Cost Type	Rate (R/ton)
Handling (R/t)	R79.50
Season tariff (R/t)	R159.20
Daily tariff (R/t/day)	R1.28

Cost Type	Rate (R/ton)
Handling (R/t)	R79.50
Season tariff (R/t)	R190.00
Daily tariff (R/t/day)	R1.45
Silo certificate issuing	R6.90/t
Administrative cost (min R80/transaction)	R6.90/t

Cost Type	Rate (R/ton)
Handling (R/t)	R79.50
Season tariff (R/t)	R190.00
Daily tariff (R/t/day)	R1.45

Cost Type	Rate (R/ton)
Handling (R/t)	R122.85
Season tariff (R/t)	R316.70
Daily tariff (R/t/day)	R2.44

Product	Day (R/t/day)	Year (R/t)	Handling in (R/t)	Handling out (R/t)
Maize	R1.21	R170.00	R16.01	R54.60
Soybeans	R1.27	R178.18	R17.96	R62.48

Product	Day (R/t/day)	Year (R/t)	Handling in (R/t)	Handling out (R/t)
Maize	R1.21	R164.48	R12.08	R52.33
Soybeans	R1.27	—	R14.78	R62.64
Wheat	R1.40	—	R20.50	R67.65
Canola	R1.50	—	—	R130.00

Product	Day (R/t/day)	Year (R/t)	Handling in (R/t)	Handling out (R/t)
Maize	R1.29	R170.00	R12.68	R54.95
Soybeans	R1.33	R178.18	R15.52	R65.77

Grading Regulations

Maximum permissible deviations per commodity and grade.

📋 Grading Regulations — Reference Tables

Maximum permissible deviations per commodity and grade. Click the gazette link for full regulations.

Standards for Grades of Class White Maize & Class Yellow Maize

Deviation	White Maize			Yellow Maize
Deviation	WM1	WM2	WM3	YM1	YM2	YM3
1. Foreign matter	0.3%	0.5%	0.75%	0.3%	0.5%	0.75%
2. Other colour maize kernels	3%	6%	10%	2%	5%	5%
3. Defective kernels (above & below 6.35mm)	7%	13%	30%	*	*	*
4. Defective kernels passing 6.35mm sieve	*	*	*	4%	10%	30%
5. Defective kernels NOT passing 6.35mm sieve	*	*	*	9%	20%	30%
6. Items 1–5 collectively	8%	16%	30%	9%	20%	30%

* No specification.

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Official Maize Grading Regulations — Gazette

agbizgrain.co.za

Nature of Deviation	Super	Grade 1	Grade 2	Grade 3
(a) Heavily frost-damaged kernels	5%	5%	5%	5%
(b) Field fungi infected kernels	2%	2%	2%	2%
(c) Storage fungi infected kernels	0.5%	0.5%	0.5%	0.5%
(d) Screenings	3%	3%	3%	3%
(e) Other grain and unthreshed ears	1%	1%	1%	1%
(f) Gravel, stones and turf	0.5%	0.5%	0.5%	0.5%
(g) Foreign matter incl. gravel, stones & turf	1%	1%	1%	1%
(h) Heat-damaged kernels	0.5%	0.5%	0.5%	0.5%
(i) Damaged kernels incl. heat-damaged	2%	2%	2%	2%
(j) Items (d),(e),(g),(i) collectively	5%	5%	5%	5%

Deviation	Class FH — Grade 1	Class FS — Grade 1
1. Damaged sunflower seed	10%	10%
2. Screenings	4%	4%
3. Sclerotia	4%	4%
4. Foreign matter	4%	4%
5. Items 2, 3 and 4 collectively	6%	6%

Nature of Deviation	Grade SB1
(a) Wet pods	0.2%
(b) Foreign matter incl. stones, other grain & sunflower seeds	5%
(c) Other grain	0.5%
(d) Sunflower seed	0.1%
(e) Stones	1%
(f) Sclerotia	4%
(g) Soya beans passing 4.75mm round-hole screen	10%
(h) Defective soya beans on 4.75mm round-hole screen	10%
(i) Soiled soya beans	10%
(j) Items (b) and (f) collectively	7%

Nature of Deviation	Grain Sorghum	Grained Sorghum
1. Foreign matter (Reg 13)	1.5%	2.0%	3.0%	1.5%	3.0%
2. Unthreshed sorghum (Reg 14)	4.0%	6.0%	12.0%	4.0%	20.0%
3. Defective sorghum (Reg 15)	3.0%	10.0%	20.0%	3.0%	20.0%
4. Small kernel sorghum (Reg 15)	8.0%	10.0%	20.0%	8.0%	20.0%
5. Total defective & small kernel sorghum	10.0%	10.0%	20.0%	10.0%	20.0%
6. Sorghum of another group (Reg 16)	4.0%	6.0%	10.0%	4.0%	*
7. White sorghum (Reg 17)	4.0%	6.0%	*	4.0%	*
8. Total of items 6 & 7	6.0%	10.0%	*	6.0%	*
9. Weather-stained sorghum	50.0%	50.0%	75.0%	50.0%	75.0%

Carry Calculator

Determine full carry and what percentage of carry the market is trading.

∿ Cost of Carry

Full carry is the spread that exactly covers the cost of holding grain to a later delivery — storage plus finance. If the market spread pays 100% of that, it's paying you to store. Less than 100% means the market wants grain sooner.

Storage source

Daily storage rate (R/t/day)

Storage period (days)

Market spread — forward − near (R/t)

Include finance cost

Near / Safex price (R/t)

Interest rate (% p.a.)

Levies & Discounts

Statutory levies and wheat grade discounts. All levies exclude VAT.

💰 Levies & Grade Discounts

All levies exclude VAT. Click the official gazette links for full regulations.

SACTA Soybean Levy

Commodity	Period	Amount (excl. VAT)
Soybeans	1/3/2025 to 28/2/2026	R70.00/metric ton
	1/3/2026 to 28/2/2027	R73.00/metric ton
	1/3/2027 to 28/2/2028	R84.00/metric ton

🔗

Official Soybean SACTA Levy — Government Gazette

sactalevy.co.za

Commodity	Period	Amount (excl. VAT)
Wheat	1/10/2026 to 30/9/2027	R35.00/metric ton
Wheat	1/10/2027 to 30/9/2028	R35.00/metric ton
Barley	1/10/2026 to 30/9/2027	R35.00/metric ton
Barley	1/10/2027 to 30/9/2028	R35.00/metric ton
Oats	1/10/2026 to 30/9/2027	R35.00/metric ton
Oats	1/10/2027 to 30/9/2028	R35.00/metric ton

Commodity	Period	Amount (excl. VAT)
Wheat	1/10/2025 to 30/9/2026	R12.70/metric ton
	1/10/2026 to 30/9/2027	R13.40/metric ton
	1/10/2027 to 30/9/2028	R14.30/metric ton
Barley	1/10/2025 to 30/9/2026	R12.70/metric ton
	1/10/2026 to 30/9/2027	R13.40/metric ton
	1/10/2027 to 30/9/2028	R14.30/metric ton
Oats	1/10/2025 to 30/9/2026	R10.60/metric ton
	1/10/2026 to 30/9/2027	R11.20/metric ton
	1/10/2027 to 30/9/2028	R11.90/metric ton

Grade	Min Protein	Grade Adjustment	Discount/Premium (R/t)
Super	12.50%	2%	+R119.00
B1	11.50%	Base	PAR
B2	10.50%	-1%	-R60.00
B3	9.50%	-4%	-R239.00