Tariffs Are Crushing Rehab Margins. Track Every Dollar.

A deck that cost you $10,000 last year now runs $12,500. Kitchen cabinets are up 30 to 50 percent. Steel, copper, and aluminum are carrying a 50 percent tariff. If you're still estimating rehab budgets off 2024 comps, you're building deals that look profitable on paper and bleed cash in execution.

The National Association of Home Builders estimates tariffs have added $9,200 to $17,500 per home in additional construction costs. That's not a rounding error. On a fix and flip where your total margin was $30,000, that's a third to half of your profit gone before you even account for holding costs.

The Margin Problem Nobody's Tracking

Here's what I'm seeing right now in Houston and across the markets where our clients operate. Investors are running their rehab budgets the same way they always have: get a contractor bid, pad it 10 percent, and assume the spread covers surprises. That worked when lumber was stable and cabinet prices were predictable. It doesn't work when your materials line item can shift 30 percent between the time you bid a project and the time your contractor places the order.

The problem isn't just that costs went up. It's that most investors have no line-item visibility into where the increases hit. Their books show a lump sum paid to a GC. Maybe they have the contract. Maybe they have a draw schedule. But the actual material cost breakdown that shows what percentage of the budget went to tariff-inflated materials versus labor versus fixtures? That almost never exists in the books.

Without that granularity, you can't calculate an accurate improvement ratio. You can't make informed capitalization decisions. And you definitely can't explain to a lender why your rehab budget came in $14,000 over the original scope.

Why Improvement Ratios Matter More Than Ever

Your improvement ratio, the relationship between what you paid for a property and what you invested in the rehab, drives critical financial decisions. It affects your cost basis, your depreciation schedule, and your exit strategy.

When tariffs inflate material costs by 9 percent or more across the board, your improvement ratio changes even if the scope of work stays identical. A $180,000 purchase with a $60,000 rehab is a 33 percent improvement ratio. The same property with the same scope of work at tariff-adjusted pricing might run $72,000, pushing that ratio to 40 percent. That shift has real consequences.

First, it changes your capitalization math. More of the project cost is now attributable to specific material components that may qualify for different depreciation treatment. An HVAC system, a new roof, upgraded electrical, these are capital improvements that get depreciated. But if your books just show "$72,000 paid to ABC Construction," you've lost the ability to separate depreciable assets from day-one expenses.

Second, it changes your deal analysis. If you're running comps on after-repair value and your rehab budget is 20 percent higher than comparable projects from six months ago, your margin just compressed significantly. Fix and flip bookkeeping software that tracks costs at the line-item level lets you see exactly where the compression is happening, whether it's tariff-driven material inflation or scope creep, so you can adjust on the next deal instead of repeating the same loss.

Capitalization vs. Expense Decisions in a Tariff Economy

The capitalization versus expense question has always mattered for real estate investors. But tariffs just raised the stakes.

Consider this scenario. You're doing a full kitchen renovation on a flip. Pre-tariff, the cabinets cost $4,800 and the countertops ran $3,200. Standard rehab line items. Post-tariff, the same cabinets cost $7,200 and the countertops are $4,500. The total kitchen cost jumped from $8,000 to $11,700, a 46 percent increase on one room.

If you're holding this property as a rental instead of flipping it, those cabinet and countertop costs should be capitalized as improvements and depreciated. The higher the cost, the larger the depreciable asset, which means the depreciation deduction is bigger. But only if your books capture the actual component costs with documentation to back it up.

If your bookkeeper records "$11,700 to kitchen remodel" as a single expense line, you've just thrown away the depreciation benefit on what is now a meaningfully larger capital improvement. In a tariff economy, the difference between lazy categorization and precise cost tracking is worth thousands in tax treatment over the life of the asset.

What Your Books Should Actually Show

Every rehab project in 2026 should have this level of detail in your books:

Material costs broken out by category: lumber, cabinets, fixtures, electrical, plumbing, HVAC, roofing. Each one tracked against the original estimate. Labor costs separated from material costs on every contractor invoice. Change orders documented with the reason for the cost change, whether that's tariff-driven pricing, scope expansion, or unforeseen conditions. A running project total that reconciles against your draw schedule and bank transactions.

This isn't obsessive record-keeping for fun. This is the documentation your lender wants to see when you refinance. It's what your CPA needs to make accurate capitalization and depreciation decisions. And it's what protects you if you're ever audited on a deal where the numbers look unusual because, in a tariff environment, a lot of numbers are going to look unusual compared to historical norms.

The Operator Who Sees It vs. The Operator Who Doesn't

I've been in rooms with investors who can tell you the per-square-foot material cost on every project they've done this year. They know their average cabinet cost is up 38 percent. They've adjusted their offer prices accordingly. They're still making deals work because they see the margin in real time.

Then there are investors who found out their last flip was barely profitable when the CPA ran the numbers three months after closing. The deal felt good. The sale price was strong. But the rehab costs quietly ate the margin because nobody was tracking material costs against the budget as the project progressed.

The first operator is bankable. They can show a lender exactly how they manage project costs, how they handle cost overruns, and what their actual margins look like across a portfolio. The second operator is guessing, and lenders can smell guesswork from across the table.

What to Do Right Now

If you're in the middle of a rehab or about to start one, pull your contractor invoices and break down the material costs. Compare them against your original budget. If you're seeing 25 to 50 percent increases on specific line items, that's tariff impact and it needs to be reflected in your books accurately, not buried in a lump-sum entry.

If you're analyzing new deals, adjust your rehab estimates to reflect current material pricing. The 2024 comps are no longer reliable for budgeting. Use actual quotes, not assumptions.

And if your current bookkeeping process doesn't give you line-item visibility into rehab costs, that's the real problem. In a market where tariffs are compressing margins on every deal, the investors who see it first are the ones who stay profitable.

If your books can't tell you where the money went on your last project, you're not alone. Most RE investors are dealing with this right now, especially operators running multiple flips with different GCs across different entities.

We do cleanup and catch-up bookkeeping for real estate investors, and we build systems that track rehab costs at the detail level your lender and CPA actually need. Book a demo at carboncopi.com.