No you don't. The basic income is set off against your income tax liability, in fact, it's also been referred to as "negative income tax".
One of the nice aspects of the negative income tax is that it reduces the marginal tax rate at the bottom, which can often approach or even exceed 100% (you lose close to or even more benefits compared to the income from a low-paying job). Instead it's all just one smooth scale.
Another aspect of this is that it is one way of distributing the "automation dividend" that technology has given to society more equitably: "if robots and algorithms replace us in the labour market, they should also substitute us as taxpayers."
http://binews.org/2012/05/rieger-frank-2012-an-automation-di...
Inefficiencies in the social insurance system are one aspect, but a rather small one, IIRC.
As an IT professional who spends his days writing code to automate people away, I'm completely okay with this.
Beyond that: yes, you could in theory make things cheaper by only giving the basic income to people who need it. But that's a fool's errand: although that course would reduce average tax rates as a first order effect, it would drastically raise marginal tax rates, which are much more relevant for predicting behavior. On top of that you instantly add a whole lot of administrative costs and interest group jockeying about determining who deserves it and who doesn't.
You get a huge amount of value out of an unconditional grant, and it distorts the market far less than any other structure of welfare scheme.
If a BI shifted spending from investment/savings to consumption, demand for necessities would increase, driving up the cost. I.e., inflation.
Also, there is another structure which distorts the market even less than Basic Income. It's called the Basic Job. You get a Basic Income, but you need to show up and do work to receive it. It solves all the same problems as Basic Income, but with far lower disincentive for work, and at far lower cost.
2) I'm not too familiar with the Basic Job idea, and it's not very google-able. But I expect my general response would be two-pronged: firstly, I reject the idea that there's a huge disincentive to work with Basic Income. No one is materially satisfied at the basic income level, which my gut says should be $10k-$12k. Most working age Americans make more than that, and most are happy to take on more work when it means more money. (At some point most people do value time over money, but that's well above the minimum income level.)
But more fundamentally I reject the idea that a government has the capability to designate what're jobs that involve real, economically valuable work and what're not.
Should a person who dispenses psychoactive consumables be considered a worker? Yes, but try getting that through Congress. Should an NSA snoop? No, but same deal. What about an artist? An entrepreneur exploring a new market? An unpaid intern building up social and knowledge capital? A family caretaker?
Even if I trusted bureaucrats in DC not to be subject to special interests and regulatory capture, it's a matter of capability. They just don't have the knowledge to make these judgments, and investing enough money into providing that knowledge would be a huge waste if not impossible. On-the-ground individuals have far more knowledge about their particular circumstances and the needs of their communities than anyone else. Building the ability for dispersed economic activity to leverage dispersed knowledge has to be a cornerstone of policymaking, because those knowledge costs are increasingly the costs that define our modern economy.
Your definition of necessities is, I believe, narrower than the BLS. Consumer goods is probably a better term in retrospect. When you redistribute wealth from savers to spenders (as a BI is purported to do), you are increasing demand for consumer goods.
No one is materially satisfied at the basic income level, which my gut says should be $10k-$12k...No one is materially satisfied at the basic income level...(At some point most people do value time over money, but that's well above the minimum income level.)
This is simply incorrect. Most Americans below the poverty line already choose time over money.
http://www.bls.gov/cps/cpswp2011.pdf
I don't propose that basic jobs necessarily involve real, economically valuable work. I expect basic jobs to cost the government money.
The point is that it's cheaper than a BI, for two reasons. First, only a small subset of the population will even take the basic job - perhaps 10-50 million people. The rest will find jobs in the market economy paying more than $7.25/hour. Second, you gain some economic output from them - a low skill worker might be worth only $3/hour, and you pay him $7.25, so the loss is $4.25/hour rather than $7.25/hour. This would actually save the government money in some cases if the basic job worker replaces a unionized government worker making $20/hour.
Incidentally, the Basic Job program has been tried. FDR did it. We got a national park system out of it, among other benefits.
There is a basic assumption people make that a basic income would result in masses of people lazing about doing nothing just because they can. Canada experimented with a minimum income in the 1970s in a Manitoba town, and here's what happened: http://disinfo.com/2013/02/the-forgotten-history-of-a-canadi...
"Only two segments of Dauphin’s labor force worked less as a result of Mincome—new mothers and teenagers. Mothers with newborns stopped working because they wanted to stay at home longer with their babies. And teenagers worked less because they weren’t under as much pressure to support their families."
More sources at Wikipedia here: http://en.wikipedia.org/wiki/Mincome
Also, wikipedia's secondary sources don't agree with each other. Some do list small disincentive effects, and suggest they would have been larger if mincome wasn't a short term thing (i.e., "don't quit your job, mincome is going away").
I also don't don't propose that the basic job should pay well at all - the pay should be well below market so you always have an incentive to get a real job.
From what I remember from my childhood there was some very limited private sector. Trust me, much damage on the psyche was done not by not allowing people to start companies but by bringing all to places where they couldn't do much and giving them money for just sitting there (and usually drinking copiously).
Present-day welfare systems have tremendous amounts of overhead to run. In a basic income system, most of that overhead goes away - you don't need an Office of Unemployment Benefits, or a Food for Underprivileged Children program - because everybody gets a check.
Do the savings completely offset the cost? I have no idea. But, it seems reasonable that they could offset a substantial portion. Of course, getting a government to willingly reduce it's size is a whole other problem.
Social Security and Medicare comprise a large majority of social spending in the USA. SS-OASI has overhead costs of 0.5%, and Medicare has around 1%. That's owing to them being unconditional, outside of age. Even their less efficient brethren aren't that bad: SS-DI is around 2%.
Medicaid is much higher (~6% I think) because it is so targeted and is really administered by 50 different agencies on top of the feds. But after that you get to programs that might be super inefficient but just aren't big enough to generate the huge kinds of savings we might want.
Social Security is not unconditional; both whether you are eligible at all and the benefits for which you are eligible are based on your history of qualifying contributions, not merely your age.
And because, while Medicare is usually a primary payer, Medicaid is the payer of last resort, so Medicaid has a lot more expense in verifying that there isn't another payer with an obligation to pay (including Medicare -- there is a substantial population eligible for both programs) that should pay before Medicaid, or reimburse Medicaid.
Whether or not it would cause inflation is unclear, because wages may decrease correspondingly.
With GMI, there's no justification for class resentment - you get the same benefit as everyone else.
Guaranteed Minimum Income is the idea that if your own income is insufficient, the state will step in and provide one for you. The conditionality in that definition, however, means that it would be a means-tested programme with all the attendant implications for marginal tax rates, poverty traps, class resentment, etc.
A Universal/Unconditional Basic Income is different -- it's provided to everyone with no means testing whatsoever. I think that's what you meant, based on how you're using it. But just be aware that GMI/UBI are actually quite different things.
For replacing poverty-targetted programs, this effect is limited if its used in a system which already has an appropriate progressive income tax system, further, it makes "needing it" less durable, as it doesn't prevent gains in personal earning potential from being negated by cutbacks in benefits that create a disincentives (because the costs to realize the gains + the cutbacks do to receiving the gains mean that gaining income-before-benefits actually reduces effective income-after-benefits.)