Tile drainage pays in two ways. Wetter acres start yielding closer to your good ground, and you get into the field earlier. The question most farmers are really asking is not whether to tile. It is whether to keep hiring it out, or to own the machine and tile on your own schedule for as long as you farm.
Soybean yield increase from tile drainage
NORTH CENTRAL SOYBEAN RESEARCH PROGRAM
Per acre, a common budget figure for installed pattern tile
FARMDOC DAILY, UNIVERSITY OF ILLINOIS
You buy the plow once. You pay a contractor every acre, every time.
The research is consistent on direction if not on size. A twenty year North Central Soybean Research Program study found soybean yields up about 8% on experimental fields and about 4% across more than 2,800 producer fields in ten states. North Dakota trials over nine years averaged 7%, including dry years.
Owning changes the math rather than the yield. Hired tiling is a cost you pay on every acre you improve. A plow is a fixed cost you spread across your whole farm, then across the next field, and the one after that. You also tile when your ground is ready and your schedule is clear, instead of waiting on a contractor's calendar.
Every farm is different. Soil, spacing, depth, tile prices and your own hours all move the answer. Tell us about your ground and we will work through the numbers with you.