Paiwi at Hatian sa Baboy: Profit Math for Both Sides

A 50/50 paiwi sounds fair. Half the work, half the profit. Then you do the math after the pigs sell and one side took home ₱8,000 while the other took home ₱45,000 from the same batch. The percentage was right. The cost-allocation rules were not.

This is the article that should exist before any handshake deal. Real numbers from a 10-pig batch in 2026, two split structures (60/40 fattener and 50/50 sow-share), where each one quietly cheats one party, and a one-page contract template that protects both.

"Pila man jud ang akong bahin?" (How much is actually mine?)

If you're the owner lending out pigs, or the tagapag-alaga raising someone else's, the answer is in the costs, not the percentage.

What Paiwi Actually Means in Practice

Paiwi (also called paalaga or hatian) is informal contract growing between two farmers. One side has capital. The other side has labor, pen space, and time. They share the pigs and split the profit.

The Department of Agriculture and Philippine Carabao Center use a Modified Paiwi scheme for cattle and carabao multiplier farms. The legal pattern is well established. For backyard pigs, almost no one uses a written contract. Most arrangements are sealed with "Sige, hatian na ta" over coffee.

That works fine when the pigs sell at a profit and everyone's happy. It explodes when:

• A pig dies and nobody agreed in advance who absorbs the loss.
• Feed prices spike mid-batch and the side buying feed can't keep up.
• The caretaker sells direct to a biyahero without telling the owner.
• The owner pulls the pigs out early because they need cash.

The Three Split Structures You'll See

Most informal paiwi falls into one of three patterns. Each one shifts cost, risk, and reward differently.

The 50/50 owner-fed split is the most common arrangement in the Visayas and Mindanao for backyard fattening. It's also the one most likely to leave the caretaker undercompensated. We'll do that math first.

Worked Example 1: 50/50 Fattener Split (Owner Pays Feed)

The setup. Owner buys 10 LW × Landrace weaners at ₱3,500 each from a local multiplier. Owner also covers all feed and vet costs. Caretaker provides the pen, water, and daily care for ~5 months until pigs hit 90 kg liveweight. They split net profit 50/50.

The numbers (per 10-pig batch):

The sale. Assume 9 pigs survive (1 mortality, normal for backyard), each averaging 90 kg liveweight, sold at ₱180/kg farmgate per current regional pricing.

• Gross sales: 9 × 90 × ₱180 = ₱145,800
• Net profit: ₱145,800 − ₱82,200 = ₱63,600
• Owner's 50%: ₱31,800 (plus original ₱82,200 capital returned)
• Caretaker's 50%: ₱31,800

Looks fair, right? Each side gets ₱31,800. But here's where the math gets honest.

The caretaker spent 150 days × ~3 hours/day = 450 hours feeding, watering, cleaning, watching for sickness. ₱31,800 ÷ 450 hours = ₱70.67/hour. That's below the Cebu minimum wage of around ₱500/day for an 8-hour day (₱62.50/hour), so it just clears minimum if you only count active labor hours. But the caretaker also covered ₱3,000 in pen costs out of their share. Net take-home: ₱28,800 over 5 months. That's ₱5,760/month.

The owner did almost nothing. They paid ₱82,200, got it back, plus ₱31,800. ROI on owner capital: ₱31,800 ÷ ₱82,200 = 38.7% over 5 months. Annualized: ~93%. Better than any bank, mutual fund, or sari-sari store.

The split is fair only if you assume labor is worth nothing. Most paiwi contracts make this assumption silently. The caretaker rarely realizes they're effectively earning ₱5,760/month for 24/7 standby work, until the pigs sell and the math becomes visible.

Worked Example 2: 60/40 Caretaker-Fed Split

This structure flips the math. The caretaker takes on the feed cost (the biggest expense in pig farming) and gets 60% of net in return. The owner contributes only the piglet and walks away with passive income.

The setup. Same 10 LW × Landrace weaners at ₱3,500 each. Owner pays for the piglets only (₱35,000). Caretaker pays for all feed, vaccines, water, labor, and pen costs (₱50,200 total). They split net profit 60/40, with the caretaker taking 60%.

The sale. Same 9 pigs at 90 kg × ₱180/kg = ₱145,800 gross.

Now the caretaker clears ₱36,360 over 5 months, or ₱7,272/month. Plus they get back their feed capital. The owner makes less in absolute terms (₱24,240 vs ₱31,800 in Example 1), but their ROI is dramatically higher because they only put in ₱35,000.

Both sides walk away happy when:

• Liveweight stays above ₱160/kg (otherwise the caretaker can't recover feed cost)
• Mortality stays under 10% (1 dead pig in 10 is normal)
• Feed prices don't spike more than ₱200/sack mid-batch

When liveweight crashes (like late 2025 when farmgate fell to ₱150-165/kg per our pricing guide), the caretaker takes the hit hardest because they bought all the feed. The owner only loses the piglet cost.

The Mortality Question (Where Most Splits Break)

When a pig dies, who pays?

There are three honest ways to handle it. Pick one before the deal, write it down, and stop arguing.

Method A: Off the top. Mortality cost (weaner price + feed already consumed) comes off net profit before splitting. Both sides feel the loss proportionally. This is the fairest method when neither party caused the death.

Method B: Off the owner. Mortality is treated as a capital loss for the owner. Caretaker walks away with their share unaffected. Common in 50/50 owner-fed splits because the owner already paid for the dead pig. Caretaker has zero downside risk, but also less incentive to prevent disease.

Method C: Off the caretaker. Mortality is deducted from the caretaker's share, sometimes capped at the weaner price per dead pig. This pushes the caretaker to be diligent about biosecurity and parasite control. Standard in commercial contract growing.

Worked Example 3: 50/50 Sow-Share (Paiwi sa Anay)

This is the breeder version of paiwi and the most underrated structure for caretakers with pen space but no capital. The owner provides a bred sow (or pays the AI fee). The caretaker raises her through farrowing, weaning, and sells the piglets. They split weaner sales 50/50.

The setup. Owner buys a Landrace gilt at ₱18,000 from an NPPC-accredited multiplier. Sow farrows twice a year. Caretaker pays for sow feed (~12 sacks × ₱1,800 = ₱21,600 per cycle), AI/breeding fee (₱1,500 per litter), vaccines, and pen.

The sale. Sow farrows 10 piglets, weans 8 (typical Philippine backyard wean rate per PCAARRD breeding data). Weaners sell at ₱3,500 each at 30 days.

• Gross sales per litter: 8 × ₱3,500 = ₱28,000
• Caretaker costs: ₱21,600 feed + ₱1,500 AI + ₱500 vaccines = ₱23,600
• Net profit per litter: ₱28,000 − ₱23,600 = ₱4,400
• 50/50 split: ₱2,200 each per litter

That's bad. The caretaker did 4 months of work for ₱2,200. The math doesn't work, and this is why most informal sow-share deals collapse after one cycle.

The fix. Split gross sales, not net. Owner provides the sow and absorbs feed cost (sow stays at owner's farm, or owner reimburses). Caretaker only contributes labor and pen. Now the math is:

• Owner cost per litter: ₱23,600 (feed + AI + vaccines)
• Gross sales: ₱28,000
• Net: ₱4,400, split 50/50

Or split the piglets directly: 4 piglets each. Owner sells theirs, caretaker sells theirs (or keeps for fattening).

Direct piglet split is the cleanest version. No bookkeeping. No "did the feed receipts add up?" arguments. Each side gets 4 weaners and decides what to do with them. Most successful sow-share arrangements I've seen in Bohol and Leyte use this structure.

What a Real Paiwi Contract Should Cover

If you're going to do this, write it down. One page, both sides sign, both sides keep a copy. Here's what every paiwi contract needs:

1. Number of pigs and identifying marks. Ear notches, photos, weights at start.
2. Who pays for what. Piglet, feed (which brand and grade), vaccines, dewormer, vet bills, water, electricity, pen depreciation.
3. Mortality rule. Method A, B, or C from above. Specify what counts as "negligence" vs "natural cause."
4. Selling decision. Who decides when to sell? At what weight? Who finds the buyer? Who handles the cash?
5. Profit calculation. Define "net" exactly. Is it gross sales minus all costs, or gross sales minus only owner-paid costs? This is the #1 source of post-sale arguments.
6. Split percentage and timing. When does the caretaker get paid? On sale day, or after the owner recovers capital?
7. Early termination. What if the owner pulls the pigs out at month 3? What if the caretaker quits? Pro-rata splits based on weight gain are fairest.
8. Disputes. Barangay captain mediates first. If unresolved, small claims court (cases under ₱400,000 don't need a lawyer).

Themis Partner offers a Philippine profit-sharing agreement template you can adapt. The general partnership structure works fine for paiwi. Just specify the livestock terms in the schedule.

When Paiwi Beats Going Solo

Paiwi isn't always a bad deal. For some farmers, it's the right entry point.

You should be the caretaker if:

• You have pen space and time but no ₱80,000-₱100,000 to start a solo 10-pig batch.
• You want to learn the operational side (feeding, vaccinating, selling) before risking your own capital.
• You can negotiate a 60/40 caretaker-fed split. The 50/50 owner-fed deal almost never beats labor-only farm work on hourly math.

You should be the owner if:

• You have capital but no time, no pen, or you're an OFW managing from abroad.
• You want passive agricultural income with rural development bonus (some areas count this toward ACPC eligibility).
• You can verify the caretaker's track record. First-time caretakers lose more pigs.

The "Both Sides Win" Test

Before signing any paiwi deal, ask both parties this:

If everything goes wrong — half the pigs die, prices crash to ₱150/kg, feed jumps ₱400/sack — who absorbs the loss? Are we both still talking to each other afterward?

If the answer is "the caretaker eats it," it's a bad contract. If the answer is "the owner eats it," the caretaker has no skin in the game. The honest answer should be "we both lose proportionally, and we agreed to that in writing."

A good paiwi structure aligns incentives so that both sides want the pigs to live, eat well, and sell at the right time. A bad structure makes one side want to cut corners while the other side checks every receipt.

The percentage matters less than the cost-allocation rules. A 70/30 split with clear cost rules beats a 50/50 split with murky ones every time.

Sources: Philippine Carabao Center Modified Paiwi scheme; PCAARRD livestock breeding data; DA-ACPC Agri-Negosyo Loan Program; PSA Quarterly Livestock Surveys; Agriculture.com.ph BAHOG cooperative grower model (60/40 split, Balanac, Laguna).