Last year, Scioto Analysis was hired by the City of Columbus and Franklin County to make revenue projections for the Funding Review Advisory Committee. This committee was a city/county effort to make recommendations for the two local governments to finance human services, tourism, and arts programs through midcentury.
Earlier this month, I spoke to the Columbus City Council on the work we did, explaining our approach and how the recommendations should be used by the Council. During this testimony, Councilmember Lourdes Barroso de Padilla asked me a question about sustainability of funding streams. She noted that the City's hotel tax had originally been intended for a certain purpose but that over time, it came to be used for a range of other purposes as the City identified new community needs. Here, she talked about a key tension in municipal finance: how do you ensure revenue streams are sustainable over time?
What does “sustainable revenue” really mean?
“Revenue sustainability” can seem like an abstract concept, but I will offer three cornerstones of a sustainable revenue stream. First, there is adequacy: does this revenue stream provide enough revenue for the identified need? Second, there is stability: will the revenue stream bring in a predictable amount of revenue each year? Lastly, there is growth: will the revenue stream keep pace with future needs.
One reason broad-based taxes like income and sales taxes are favored by economists is that they tend to meet all three of these criteria. A large amount of revenue can be adequately collected, they tend to be stable year-to-year, and collections grow with the economy.
This also helps understand some of the appeal of user fees like gasoline taxes used for maintaining roads. Because people who buy gasoline use roads, a properly-set gasoline tax will adequately fund road maintenance, will be stable relative to road usage, and will grow as road use grows. This relationship, though, it becoming more fraught with the increasing popularity of fuel-efficient and electric vehicles.
An example of a revenue stream running into problems with this framework is Cuyahoga County’s cigarette tax. While the tax once adequately financed arts, people in the arts community are now starting to sweat as smoking rates decline, creating a growth problem for the fund. Using these funds for programs like smoking cessation programs would track growth of the revenue stream more closely.
Can multiple revenue sources make revenue more sustainable?
Another question Councilmember Barroso de Padilla asked was around the number of revenue streams needed for sustainable funding of community priorities. She tapped into an important insight here: relying on a single funding source can lead to problems in funding stability. Columbus hotel/motel tax collections fell from approximately $23.7 million in 2019 to $10.1 million in 2020, a decline of roughly 57%. Putting together a package of revenue streams is one way to make revenue more sustainable. This is very similar to individual investing: governments generally do better when they diversify their revenue portfolio.
Diversification does not guarantee revenue stability, however. Sometimes revenue streams will dip at the same time. For instance, say a city council adopted a hotel tax, a rideshare fee, and a car rental fee at the same time. This would be three different revenue streams that would likely take hits at the same time. Think of 2020 again: if people aren’t staying at hotels, they’re probably not using Uber and renting cars as much as well.
How can governments protect dedicated funding?
A big issue Councilmember Barroso de Padilla raised was how a dedicated fund (in her example, the city hotel tax) can continue to support its original purpose.
Ultimately, this is not an economic question, but a political one: how can a fund be structured in a way that protects it from changing political priorities? Governments have a few options for doing this. Governments can earmark funds for certain purposes: write into the law that a certain percentage of revenue needs to go to certain purposes. They can do this with an allocation formula that puts a certain percentage of revenues toward certain projects. They can make a fund a dedicated fund that goes toward certain purposes. And they can conduct periodic reviews like that which the Funding Review Advisory Committee did to review how funds are used and whether they are still sustainably meeting community needs.
There is a tension here. Recipients of funds, whether they are agencies or community partners, benefit from reliable public commitments. On the other hand, policymakers need flexibility to respond to emerging priorities. Because of this tension, there is no “right” way to design a funding stream.
How should policymakers evaluate revenue options?
With so many options to finance public services before them, it can be difficult for policymakers to think through which options to pick. I will put forth some criteria for policymakers here.
First, consider the sustainability of the revenue option. This means not only evaluating the adequacy of revenue collections (“how much will this raise?”) but also their stability (“how volatile are these collections year-to-year?”) and their growth (“will this continue to meet needs a decade from now?”).
Then, consider the economic impacts of the revenue option. How efficient is the policy, meaning how much will the revenue option distort economic decisions, and what economic costs will those distortions create? Who will pay for it: will it fall more on residents of your community or other communities? And how regressive will the revenue option be: how is the tax burden distributed across income groups, particularly as a share of household income?
Lastly, determine what administrative considerations need to be taken into account. Will this revenue option be costly to administer? What rules will need to be put in place around collection and disbursement? Is it even possible to collect revenue this way?
Our work with the Funding Review Advisory Committee was mainly focused on the question of adequacy: we were trying to figure out how much each revenue option could raise. But the range of considerations I lay out here is key for a policymaker trying to build a sustainable revenue model for public needs for their city.
Revenue sustainability is about building a system of revenue that adequately funds public needs, is stable from year-to-year, and grows at the same rate the public needs grow. The first year of revenue from a new revenue stream can give you some insight into its adequacy, but sustainability and growth can only be known from years. Ultimately, building a system around the financing mechanism that ensures sustainability while still leaving the flexibility necessary for governing is the puzzle policymakers need to put together as they try to design a sustainable funding system.
