A billion here, a billion there – pretty soon it can add up to real money.

Guilford County’s school construction program, supported by two major bond referenda in the last five years – a $300 million referendum in 2020 and a $1.7 billion one in 2022 – is expected to cost county taxpayers more than $3.2 billion by the time the debt is fully repaid with interest.  About $1.2 billion will be interest on the $2 billion debt, according to estimates.

The figures are derived from debt information provided in Guilford County Manager Mike Halford’s proposed 2025-2026 fiscal county budget, which outlines the county’s long-range financing plan to repay the bond debt that was approved by voters in 2020 and 2022. The $1.7 billion referendum in 2022 was the largest school construction bond in county history and one of the largest in the country that year.

The proposed budget doesn’t explicitly separate out the interest portion of the debt service. However, it provides a clear projection of total debt service obligations over the next several decades, which makes it possible to calculate that county budget officials are assuming a 5 percent interest rate for the payback over the decades.

Guilford County Communications and PR Director Linda McElroy confirmed that the county’s projections contain an assumed and modeled 5 percent interest rate, which would amount to $1.125 billion given the size and the length of time of the debt. The total payback is greater than $3.125 billion because the county also had some outstanding school debt from earlier school bonds and also the $ 2billion in approved debt raised slightly more than that due to something called bond premiums.

According to Halford’s recommended  budget, the total combined debt service for school capital projects – including both the repayment of principal and interest – is projected to be $3.289 billion through fiscal year 2052. The underlying bond principal, meanwhile, totals approximately $2.08 billion, based on the $1.7 billion referendum in 2022, the $300 million referendum in 2020, and about $79 million in prior outstanding debt service included from earlier years.

That means that Guilford County is projected to pay more than half of the original amount borrowed in interest over the life of the bonds.

The debt service schedule spreads the debt across nearly three decades, with principal and interest payments continuing through 2052. The largest annual debt service obligations will occur between 2030 and 2038 – when payments are expected to exceed $180 million annually for multiple years, based on scheduled bond issuances and a model of cash flow timing provided in the budget.

The county’s financial strategy includes a “save and pay” model meant to ease it into peak repayment periods. Earlier years—like 2025 and 2026—include surpluses, where projected revenues exceed required payments. These surpluses are designed to be banked or reinvested to soften the impact of those future giant spikes in payments.

The proposed budget earmarks recurring revenues, including property taxes and sales tax revenues, specifically for debt service. For example, the proposed 2025-2026 fiscal budget includes $53.2 million in recurring property tax revenue – roughly 10 percent of the total property tax rate – dedicated exclusively to school capital debt.

The county issued $570 million of the $1.7 billion bond referendum in March 2024. Two more issuances – each representing about $585 million – are expected in fiscal 2027-2028 and in 2029-2030, according to the county’s updated cash flow models.

This could be one reason Chairman of the Guilford County Board of Commissioners Skip Alston has seemingly committed the board to keeping the property tax rate at the same level after the countywide revaluation causes a drastic rise in assessed property values and therefore a major hike in tax bills.

The manager’s proposed budget currently on the table before the Board of Commissioners also includes $34 million in bond premium proceeds from the March 2024 issuance. That’s being used to cover first-year interest payments – effectively reducing the immediate burden on county revenues while establishing a predictable repayment schedule going forward.

Despite the huge size of the interest payments, the budget language states that “sufficient revenues are planned to meet existing school capital needs.”

That plan relies heavily on financial discipline and dedicated revenue streams that are meant to ensure the debt service remains manageable.

The size of the interest payments underscores the long-term nature of bond financing. Bonds allow governments to raise capital for major infrastructure projects –  like school construction – by borrowing money and repaying it over time with interest. While this spreads the cost over decades, it also results in whale-sized interest obligations for tax payers.

Years ago, the Guilford County Board of Commissioners planned to save up money and then have a “pay as you go” policy for school construction, but that plan is long gone and now the county is instead simply taking on massive debt and paying well over a billion in interest.

In the end, depending on what interest rates do, the county could get lucky and pay less that that $1.3 billion in interest or, if interest rates rise, the county could end up paying more than the current estimated interest amount. In the case of Guilford County’s debt, the $1.3 billion interest estimate assumes that all planned issuances go ahead as scheduled and that interest rates remain consistent with current projections.

The $1.3 billion in projected interest equates to an average of $43 million per year in interest payments over the next 28 years. In peak years such as 2032 and 2033, when total debt service is expected to approach or exceed $190 million, the interest portion of the debt alone could exceed $80 million annually – depending on the amortization schedules of the remaining bond issuances.

The heavy weight of the long-term debt will remain a central element of Guilford County’s finances for decades. The school bond investments are expected to support construction, renovation, and modernization of dozens of school buildings throughout Guilford County, addressing overcrowding, aging facilities, and security upgrades.

Still, commissioners argue this isn’t enough money for the schools and Alston has already spoken of a need for another $1 billion school bond in the not too distant future.

As these new and renovated schools open in coming years, the benefits will be visible – but the financial obligations will remain in place for a very long time after the ribbon cuttings.

How future Guilford County Boards of Commissioners manage the remaining bond issuances and long-term debt service will determine whether the plan stays on track. The current model depends on disciplined adherence to revenue allocations and issuance schedules, along with continued economic growth to support county revenues.

Voters supported the bonds and now that support is being translated into the largest capital repayment efforts in county history – one that will define a generation of public finance in Guilford County.

The interest payment on the school debt alone is hundreds of millions more than the entire Guilford County budget.